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{{Short description|none}}
:''This article is about the history of science in the Islamic civilisation between the 8th and 15th centuries.
{{Redirect|Islamic science|the Islamic religious sciences|Islamic sciences}}
:''For information on science in the context of Islam, see ].''
{{Good article}}
{{Use British English|date=June 2017}}
], a mathematical device invented by the Persian polymath ] to model the not perfectly circular ]]]
'''Science in the medieval Islamic world''' was the science developed and practised during the ] under the ] of ], the ] of ], the ] of ], the ], the ] and the ] in ] and beyond, spanning the period roughly between 786 and 1258. Islamic scientific achievements encompassed a wide range of subject areas, especially ], ], and ]. Other subjects of scientific inquiry included ], ] and ], ], ], ], ], and ].


Medieval Islamic science had practical purposes as well as the goal of understanding. For example, astronomy was useful for determining the '']'', the direction in which to pray, botany had practical application in agriculture, as in the works of ] and ], and geography enabled ] to make accurate maps. Islamic mathematicians such as ], ] and ] made advances in ], ], ] and ]. Islamic doctors described diseases like ] and ], and challenged classical Greek medical theory. ], Avicenna and others described the preparation of hundreds of ] made from ] and chemical compounds. Islamic physicists such as ], Al-Bīrūnī and others studied optics and mechanics as well as astronomy, and criticised ]'s view of motion.
{{history of science}}
In the ], '''Islamic science''' refers to the science developed under the ] between the 8th and 15th centuries, during what is known as the ].<ref>{{cite journal|first=A. I.|last=Sabra|authorlink=A. I. Sabra|title=Situating Arabic Science: Locality versus Essence|journal=Isis|year=1996|volume=87|pages=654-670|url=http://links.jstor.org/sici?sici=0021-1753%28199612%2987%3A4%3C654%3ASASLVE%3E2.0.CO%3B2-M}}
{{quote|"Let us begin with a neutral and innocent definition of Arabic, or what also may be called Islamic, science in terms of time and space: the term ''Arabic'' (or ''Islamic'') ''science'' the scientific activities of individuals who lived in a region that might extended chronologically from the eighth century A.D. to the beginning of the modern era, and geographically from the Iberian Peninsula and north Africa to the Indus valley and from the Southern Arabia to the Caspian Sea&mdash;that is, the region covered for most of that period by what we call Islamic Civilization, and in which the results of the activities referred to were for the most part expressed in the Arabic Language. We need not be concerned over the refinements that obviously need to be introduced over this seemingly neutral definition."}}</ref> It is also known as '''Arabic science''' due to most texts during this period being written in ], the '']'' of the Islamic civilization. Despite these names, not all scientists during this period were ] or ], as there were a number of notable non-Arab scientists, as well as some non-Muslim scientists, contributing to science in the Islamic civilization.


During the Middle Ages, Islamic science flourished across a wide area around the ] and further afield, for several centuries, in a wide range of institutions.
A number of modern scholars, notably ], ], ], ], ], and ], consider modern ] to have begun from ], who were pioneers of the ] and introduced a modern ], ]al and ] approach to scientific ]. Some have referred to their achievements as a "Muslim ]".<ref>Abdus Salam, H. R. Dalafi, Mohamed Hassan (1994), ''Renaissance of Sciences in Islamic Countries'', p. 162. World Scientific, ISBN 9971507137.</ref><ref>Salah Zaimeche (2003), , FSTC.</ref>


== Overview == ==Context and history==
{{Islam|expanded=history}}
=== Rise ===
]:
{{see|Islamic Golden Age}}
{{legend|#a1584e|under ], 622–632}}
During the early ], the ] ]s led by ] conquered the ] ] and more than half of the ] ], establishing the ] across the ], ], and ], followed by further expansions across ], ] and the ]. As a result, the Islamic governments inherited "the knowledge and skills of the ancient ], of ], of ] and of ]. They added new and important innovations from outside, such as positional numbering from ]," as ] wrote in '']?''
{{legend|#ef9070|under ], 632–661}}
{{legend|#fad07d|under ], 661–750}}]]
{{Further|History of Islam}}


<!--this is a SHORT SUMMARY to set this article in context-->
Another innovation was ] - originally a secret tightly guarded by the ]. The art of ] was obtained from two prisoners at the ] (751), resulting in ]s being built in ] and ]. The Arabs improved upon the Chinese techniques using ] rags instead of ] bark.
The Islamic era began in 622. Islamic armies eventually conquered ], ] and ], and successfully displaced the ] and ]s from the region within a few decades. Within a century, Islam had reached the area of present-day ] in the west and ] in the east. The ] (roughly between 786 and 1258) spanned the period of the ] (750–1258), with stable political structures and flourishing trade. Major religious and cultural works of the ] were translated into ] and occasionally ]. ], ], ]n and Persian influences. A new common civilisation formed, based on Islam. An era of ] and innovation ensued, with rapid growth in population and cities. The ] in the countryside brought more crops and improved agricultural technology, especially ]. This supported the larger population and enabled culture to flourish.<ref name=Hodgson>{{cite book |last=Hodgson |first=Marshall |author-link=Marshall Hodgson |title=The Venture of Islam; Conscience and History in a World Civilisation Vol 1 |publisher=University of Chicago |date=1974 |pages= |isbn=978-0-226-34683-0 |url=https://archive.org/details/ventureofislamco00hodg/page/233 }}</ref><ref name=McClellanDorn2006>McClellan and Dorn ]</ref> From the 9th century onwards, scholars such as ]<ref name="SEP-Al-Kindi">{{cite encyclopedia |title=Al-Kindi |url=https://plato.stanford.edu/entries/al-kindi/ |encyclopedia=] |date=17 March 2015}}</ref> translated ]n, ]n, ] and ] knowledge, including the works of ], into ]. These translations supported advances by scientists across the ].<ref name=RobinsonCambridge>{{cite book |editor-last=Robinson |editor-first=Francis |editor-link=Francis Robinson |title=The Cambridge Illustrated History of the Islamic World |publisher=] |year=1996 |pages=228–229}}</ref>
], 750–1261 (and later in Egypt) at its height, c. 850]]
Islamic science survived the initial Christian ], including the fall of ] in 1248, as work continued in the eastern centres (such as in Persia). After the completion of the Spanish reconquest in 1492, the Islamic world went into an economic and cultural decline.<ref name=McClellanDorn2006/> The Abbasid caliphate was followed by the ] ({{circa}} 1299–1922), centred in Turkey, and the ] (1501–1736), centred in Persia, where work in the arts and sciences continued.<ref>Turner ]</ref>


==Fields of inquiry==
The difference in attitudes of ] and the medieval ] was firm. ] added little to no new knowledge of science or medicine to the ] scientific tradition, stagnating in awe of their classical predecessors. This could perhaps be explained by the fact that the initial Islamic surge out of Arabia had captured three of its most productive cities: ], ], and ]. Because of the loss of a highly skilled and centralized government, as well as continuous and devastating Arab conquests into ], most Byzantine cities could not support the arts and sciences, and there was a mass return to ]. Most notable ] and ] lived and practiced during the Islamic Golden Age.
Medieval Islamic scientific achievements encompassed a wide range of subject areas, especially ], ], and ].<ref name=RobinsonCambridge/> Other subjects of scientific inquiry included ], ], ], and ].<ref>Turner ]</ref>{{efn|{{harvnb|Lindberg|Shank|2013|loc=chapters 1–5}} cover science, mathematics and medicine in Islam.}}


===Alchemy and chemistry ===
The number of important and original Arabic works written on the mathematical sciences is much larger than the combined total of ] and ] works on the mathematical sciences.<ref>N. M. Swerdlow (1993). "Montucla's Legacy: The History of the Exact Sciences", ''Journal of the History of Ideas'' '''54''' (2), p. 299-328 .</ref>
{{Main |Alchemy and chemistry in the medieval Islamic world}}


The early Islamic period saw the establishment of theoretical frameworks in ] and ]. The ], first found in '']'' ("The Secret of Creation", c. 750–850, ] to ]), and in the writings attributed to ] (written c. 850–950),<ref name="Kraus">{{cite book |last=Kraus |first=Paul |author-link=Paul Kraus (Arabist) |year=1942–1943 |title=Jâbir ibn Hayyân: Contribution à l'histoire des idées scientifiques dans l'Islam. I. Le corpus des écrits jâbiriens. II. Jâbir et la science grecque |publisher=Institut Français d'Archéologie Orientale |location=Cairo |oclc=468740510 |isbn=978-3-487-09115-0}} vol. II, p. 1, note 1; {{cite book |last=Weisser |first=Ursula |editor-first1=Otto |editor-last1=Spies |title=Das "Buch über das Geheimnis der Schöpfung" von Pseudo-Apollonios von Tyana |publisher=] |year=1980 |location=Berlin |doi=10.1515/9783110866933 |page=199|isbn=978-3-11-007333-1 }}</ref> remained the basis of theories of metallic composition until the 18th century.<ref>{{cite journal |last=Norris |first=John |year=2006 |title=The Mineral Exhalation Theory of Metallogenesis in Pre-Modern Mineral Science |journal=Ambix |volume=53 |issue=1 |pages=43–65 |doi=10.1179/174582306X93183|s2cid=97109455 }}</ref> The '']'', a cryptic text that all later alchemists up to and including ] saw as the foundation of their art, first occurs in the ''Sirr al-khalīqa'' and in one of the works attributed to Jabir.<ref>{{cite book |last=Weisser |first=Ursula |editor-first1=Otto |editor-last1=Spies |title=Das "Buch über das Geheimnis der Schöpfung" von Pseudo-Apollonios von Tyana |publisher=] |year=1980 |location=Berlin |doi=10.1515/9783110866933|isbn=978-3-11-007333-1 }} p. 46. On Newton's alchemy, see {{cite book |last=Newman |first=William R. |author-link=William R. Newman |title=Newton the Alchemist: Science, Enigma, and the Quest for Nature's Secret Fire |year=2019 |publisher=Princeton University Press |location=Princeton |isbn=978-0-691-17487-7}}</ref> In practical chemistry, the works of Jabir, and those of the Persian alchemist and physician ] (c. 865–925), contain the earliest systematic classifications of chemical substances.<ref name="chemicke-listy.cz">{{cite journal |last1=Karpenko |first1=Vladimír |last2=Norris |first2=John A. |year=2002 |title=Vitriol in the History of Chemistry |journal=Chemické listy |volume=96 |issue=12 |pages=997–1005 |url=http://www.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/2266}}</ref> Alchemists were also interested in artificially creating such substances.<ref>See {{cite book |last=Newman |first=William R. |author-link=William R. Newman |year=2004 |title=Promethean Ambitions: Alchemy and the Quest to Perfect Nature |location=Chicago |publisher=University of Chicago Press |isbn=978-0-226-57524-7}}</ref> Jabir describes the synthesis of ] (]) from ],<ref name="Kraus"/> and Abu Bakr al-Razi experimented with the heating of ammonium chloride, ], and other ], which would eventually lead to the discovery of the ] by 13th-century Latin alchemists such as ].<ref name="chemicke-listy.cz"/>
===Scientific method===
] (Alhazen) was a ] who has been described as the "father of ]", the "pioneer of the modern ]", the "founder of ] and ]", and the "first ]".]]


===Astronomy and cosmology===
Muslim scientists placed far greater emphasis on ] and ]ation than any previous ], and they introduced ], precise ], ], and careful records.<ref name=Durant/> Their new approach to scientific ] led to the development of the ] in the Islamic world. In particular, the empirical observations and ] experiments of ] (Alhacen) in his '']'' (1021) is seen as the beginning of the modern scientific method.<ref name=Agar>David Agar (2001). . ].</ref> Other leading exponents of the experimental method included ] (who introduced it to ]), ] (who introduced it to ]), and ] (who introduced it to ] and ]).<ref name=Biruni>{{MacTutor|id=Al-Biruni|title=Al-Biruni}}</ref> The most important development of the scientific method, the use of experimentation and quantification to distinguish between competing scientific theories set within a generally empirical orientation, was introduced by Muslim scientists.
]'s explanation of the ] ]]
{{Main|Astronomy in the medieval Islamic world| Cosmology in medieval Islam}}


Astronomy became a major discipline within Islamic science. Astronomers devoted effort both towards understanding the nature of the cosmos and to practical purposes. One application involved determining the ]. Another was ], predicting events affecting human life and ] such as going to war or founding a city.<ref>Turner ]</ref> ] (850–922) accurately determined the length of the solar year. He contributed to the ], used by astronomers to predict the movements of the sun, moon and planets across the sky. ] (1473–1543) later used some of Al-Battani's astronomic tables.<ref>Masood ]</ref>
Rosanna Gorini writes:
{{quote|"According to the majority of the ]s al-Haytham was the pioneer of the modern scientific method. With his book he changed the meaning of the term optics and established experiments as the norm of proof in the field. His investigations are based not on abstract theories, but on experimental evidences and his experiments were systematic and repeatable."<ref name=Gorini>Rosanna Gorini (2003). "Al-Haytham the Man of Experience. First Steps in the Science of Vision", ''International Society for the History of Islamic Medicine''. Institute of Neurosciences, Laboratory of Psychobiology and Psychopharmacology, Rome, Italy.</ref>}}


] (1028–1087) developed a more accurate ], used for centuries afterwards. He constructed a ] in ], discovered that the Sun's ] moves slowly relative to the fixed stars, and obtained a good estimate of its motion<ref>], . Owing to the unreliability of the data al-Zarqali relied on for this estimate, its remarkable accuracy was fortuitous.</ref> for its rate of change.<ref>Masood ]</ref> ] (1201–1274) wrote an important revision to ]. When Tusi became ]'s astrologer, he was given an observatory and gained access to Chinese techniques and observations. He developed ] as a separate field, and compiled the most ] available up to that time.<ref>Masood ]</ref>
Ibn al-Haytham, who is now known as the father of ],<ref>R. L. Verma "Al-Hazen: father of modern optics", ''Al-Arabi'', 8 (1969): 12-13.</ref> used the scientific method to obtain the results in his '']''. In particular, he combined observations, experiments and rational arguments to show that his modern intromission theory of ], where ] of ] are emitted from objects rather than from the eyes, is scientifically correct, and that the ancient ] supported by ] and ] (where the eyes emit rays of light), and the ancient intromission theory supported by ] (where objects emit physical particles to the eyes), were both wrong.<ref>D. C. Lindberg, ''Theories of Vision from al-Kindi to Kepler'', (Chicago, Univ. of Chicago Pr., 1976), pp. 60-7.</ref> It is known that ] (who was sometimes erroneously given credit for the scientific method) was familiar with Ibn al-Haytham's work.


===Botany and agronomy===
Ibn al-Haytham developed rigorous experimental methods of controlled ] in order to verify theoretical ] and substantiate ] ]s.<ref name=Bizri/> Ibn al-Haytham's scientific method was very similar to the modern scientific method and consisted of the following procedures:<ref>Bradley Steffens (2006). ''Ibn al-Haytham: First Scientist'', Morgan Reynolds Publishing, ISBN 1599350246. (] Bradley Steffens, "Who Was the First Scientist?", ''Ezine Articles''.)</ref>
{{Further|Arab Agricultural Revolution}}


], ], and ] trees, in ]'s 13th century ] ]]
#]
#Statement of ]
#Formulation of ]
#Testing of hypothesis using ]ation
#Analysis of experimental ]s
#Interpretation of ] and formulation of ]
#] of findings


The study of the natural world extended to a detailed examination of plants. The work done proved directly useful in the unprecedented growth of ]<!--see Pharmacology below for details--> across the Islamic world.<ref name=Turner138/> ] (815–896) popularised ] in the Islamic world with his six-volume ''Kitab al-Nabat'' (''Book of Plants''). Only volumes 3 and 5 have survived, with part of volume 6 reconstructed from quoted passages. The surviving text describes 637 plants in alphabetical order from the letters ''sin'' to ''ya'', so the whole book must have covered several thousand kinds of plants. Al-Dinawari described the phases of ] and the production of flowers and fruit. The thirteenth century encyclopedia compiled by ] (1203–1283) – ] – contained, among many other topics, both realistic botany and fantastic accounts. For example, he described trees which grew birds on their twigs in place of leaves, but which could only be found in the far-distant British Isles.<ref name=Fahd-815>{{citation|last=Fahd |first=Toufic |title=Botany and agriculture| page=815}}, in Morelon & Rashed ]</ref><ref name=Turner138>Turner ]</ref><ref>Turner ]</ref> The use and cultivation of plants was documented in the 11th century by ] of ] in his book ''Dīwān al-filāha'' (The Court of Agriculture), and by ] (also called Abū l-Khayr al-Ishbīlī) of ] in his 12th century book ''Kitāb al-Filāha'' (Treatise on Agriculture). Ibn Bassāl had travelled widely across the Islamic world, returning with a detailed knowledge of ] that fed into the ]. His practical and systematic book describes over 180 plants and how to propagate and care for them. It covered leaf- and root-vegetables, herbs, spices and trees.<ref>{{cite web |title=Ibn Baṣṣāl: Dīwān al-filāḥa / Kitāb al-qaṣd wa'l-bayān |url=http://www.filaha.org/author_Ibn_bassal.html |website=The Filaha Texts Project: The Arabic Books of Husbandry |access-date=11 April 2017}}</ref>
The development of the scientific method is considered to be so fundamental to ] that some — especially ] and practicing scientists — consider earlier inquiries into nature to be ''pre-scientific''. Some have described Ibn al-Haytham as the "first ]" for this reason.<ref>Bradley Steffens (2006). ''Ibn al-Haytham: First Scientist'', Morgan Reynolds Publishing, ISBN 1599350246.</ref>


===Geography and cartography===
In ''The Model of the Motions'', Ibn al-Haytham also describes an early version of ], where he employs only minimal hypotheses regarding the properties that characterize astronomical motions, as he attempts to eliminate from his planetary model the ] hypotheses that cannot be observed from ].<ref>Roshdi Rashed (2007). "The Celestial Kinematics of Ibn al-Haytham", ''Arabic Sciences and Philosophy'' '''17''', p. 7-55 . ].</ref>
] of ] (1513)]]
{{Main|Geography and cartography in medieval Islam}}


The spread of Islam across Western Asia and North Africa encouraged an unprecedented growth in trade and travel by land and sea as far away as Southeast Asia, China, much of Africa, Scandinavia and even Iceland. Geographers worked to compile increasingly accurate maps of the known world, starting from many existing but fragmentary sources.<ref>Turner ]</ref> ] (850–934), founder of the Balkhī school of cartography in Baghdad, wrote an atlas called ''Figures of the Regions'' (Suwar al-aqalim).<ref>{{cite book |author1=Edson, E. |author2=] |title=Medieval Views of the Cosmos |pages=61–63 |publisher=Bodleian Library |date=2004 |isbn=978-1-851-24184-2}}</ref>
] wrote in ''The Making of Humanity'':
] (973–1048) measured the radius of the earth using a new method. It involved observing the height of a mountain at ] (now in Pakistan).<ref>{{cite encyclopedia |last=Pingree |first=David |author-link=David Pingree |title=BĪRŪNĪ, ABŪ RAYḤĀN iv. Geography |encyclopedia=] |date=March 1997 |publisher=Columbia University |isbn=978-1-56859-050-9}}</ref> ] (1100–1166) drew a map of the world for ], the Norman King of Sicily (ruled 1105–1154). He also wrote the '']'' (Book of Roger), a geographic study of the peoples, climates, resources and industries of the whole of the world known at that time.<ref>Masood ]</ref> The ] ] ] ({{circa}} 1470–1553) made a map of the New World and West Africa in 1513. He made use of maps from Greece, Portugal, Muslim sources, and perhaps one made by ]. He represented a part of a major tradition of Ottoman cartography.<ref>Turner ]</ref>
{{quote|"The debt of our science to that of the ]s does not consist in startling discoveries or revolutionary theories; science owes a great deal more to Arab culture, it owes its existence. The ancient world was, as we saw, pre- scientific. The astronomy and mathematics of the Greeks were a foreign importation never thoroughly acclimatized in Greek culture. The Greeks systematized, generalized and theorized, but the patient ways of investigation, the accumulation of positive knowledge, the minute methods of science, detailed and prolonged observation, experimental inquiry, were altogether alien to the Greek temperament. What we call science arose in Europe as a result of a new spirit of inquiry, of new methods of investigation, of the method of experiment, observation, measurement, of the development of mathematics in a form unknown to the Greeks. That spirit and those methods were introduced into the European world by the Arabs."<ref>] (1928). ''The Making of Humanity'', p. 191. G. Allen & Unwin Ltd.</ref>}}
{{quote|Science is the most momentous contribution of ] to the ], but its fruits were slow in ripening. Not until long after ] culture had sunk back into darkness did the giant to which it had given birth, rise in his might. It was not science only which brought Europe back to life. Other and manifold influences from the civilization of Islam communicated its first glow to European life."<ref>] (1928). ''The Making of Humanity'', p. 202. G. Allen & Unwin Ltd.</ref>}}


<gallery mode="packed">
], the father of the ], wrote:
File:TabulaRogeriana upside-down.jpg| Modern copy of ]'s 1154 '']'', upside-down, north at top
{{quote|"The main, as well as the least obvious, achievement of the Middle Ages was the creation of the experimental spirit and this was primarily due to the Muslims down to the 12th century."<ref name=Salam/>}}
</gallery>

] wrote in the ''Pioneers of Science'':
{{quote|"The only effective link between the old and the new science is afforded by the Arabs. The ] come as an utter gap in the scientific history of Europe, and for more than a thousand years there was not a scientific man of note except in ]."<ref>], ''Pioneers of Science'', p. 9.</ref>}}

] wrote in '']'':
{{quote|"Thus the experimental method, reason and observation introduced by the Arabs were responsible for the rapid advancement of science during the medieval times."<ref>] (1934, 1999). '']''. Kazi Publications. ISBN 0686184823.</ref>}}

=== Decline ===
{{see|Islamic Golden Age}}
From the 12th century onwards, Islamic science and the numbers of Islamic scientists began declining. After the 13th century, the Islamic civilization would still produce occasional scientists but they became the exception, rather than the rule (see ]). Some historians have recently come to question the traditional picture of decline, pointing to continued astronomical activity as a sign of a continuing and creative scientific tradition through to the 16th century, of which the work of ] (1304–1375) in Damascus is considered the most noteworthy example.<ref>], ''A History of Arabic Astronomy: Planetary Theories During the Golden Age of Islam'', (New York: New York University, 1994), p.vii: "The main thesis, for which this collection of articles cam be used as evidence, is the one claiming that the period often called a period of decline in Islamic intellectual history was, scientifically speaking from the point of view of astronomy, a very productive period in which astronomical thories of the highest order were produced."</ref><ref>David A. King, "The Astronomy of the Mamluks", ''Isis'', 74 (1983):531-555</ref>

One reason for the scientific decline can be traced back to the 10th century, when the orthodox school of ] theology challenged the more rational school of ] theology. Other reasons include conflicts between the ] and ] Muslims, and invasions by ] and ] on Islamic lands between the 11th and 13th centuries, especially the ] of the 13th century. The Mongols destroyed Muslim libraries, observatories, hospitals, and universities, culminating in the ], the ] capital and intellectual centre, in 1258, which marked end of the ].<ref>Erica Fraser. , ].</ref>

By the 13th century, the more strict Ash'ari school replaced Mu'tazili thoughts in Islamic lands. That replacement and numerous wars and conflicts created a climate which made Islamic science less successful than before. With the fall of ] in 1492, scientific and technological initiative generally passed to Christian Europe and led to what are now known as the European ] and ].

===Influence on European science===
{{see|Latin translations of the 12th century}}
Contributing to the growth of European science was the major search by European scholars for new learning which they could only find among Muslims, especially in ] and ]. These scholars translated new scientific and philosophical texts from ] into ].

One of the most productive translators in Spain was ], who translated 87 books from Arabic to Latin,<ref name=Zaimeche/>
including ]'s '']'', ]'s ''Elementa astronomica'',<ref name=Katz/>
]'s ''On Optics'', ]'s ''On Elements of Astronomy on the Celestial Motions'', ]'s ''On the Classification of the Sciences'',<ref>For a list of Gerard of Cremona's translations see: Edward Grant (1974) ''A Source Book in Medieval Science'', (Cambridge: Harvard Univ. Pr.), pp. 35-8 or Charles Burnett, "The Coherence of the Arabic-Latin Translation Program in Toledo in the Twelfth Century," ''Science in Context'', 14 (2001): at 249-288, at pp. 275-281.</ref>
the ] and ] works of ],<ref name=Bieber/>
the works of ] and ],<ref>D. Campbell, ''Arabian Medicine and Its Influence on the Middle Ages'', p. 6.</ref>
and the works of ], ], the ], ], ], and ] (including the '']'').<ref name=Zaimeche/>

Other Arabic works translated into Latin during the 12th century include the works of ] and ] (including '']''),<ref name=Katz/>
the works of ] (including the '']''),<ref name=Campbell-3>D. Campbell, ''Arabian Medicine and Its Influence on the Middle Ages'', p. 3.</ref><ref name=Zaimeche/>
]'s ''Great Sindhind'' (based on the '']'' and the works of ]),<ref>G. G. Joseph, ''The Crest of the Peacock'', p. 306.</ref>
the works of ] and ] (including '']'' and '']''),<ref>M.-T. d'Alverny, "Translations and Translators," pp. 444-6, 451</ref>
the works of ],<ref name=Campbell-3/>
the works of ], ], ], ], and his nephew Hubaysh ibn al-Hasan,<ref>D. Campbell, ''Arabian Medicine and Its Influence on the Middle Ages'', p. 4-5.</ref>
the works of ], ]'s ''Liber embadorum'', Ibn Sarabi's (] Junior) ''De Simplicibus'',<ref name=Campbell-3/>
the works of ],<ref>D. Campbell, ''Arabian Medicine and Its Influence on the Middle Ages'', p. 5.</ref>
the works of ], ], and ],<ref name=Zaimeche>Salah Zaimeche (2003). , p. 10. Foundation for Science Technology and Civilisation.</ref>
the works of ], including ''On the Motions of the Heavens'',<ref></ref><ref name=Bieber/>
]'s medical encyclopedia, ''The Complete Book of the Medical Art'',<ref name=Bieber>Jerome B. Bieber. , ].</ref>
]'s ''Introduction to Astrology'',<ref>Charles Burnett, ed. ''Adelard of Bath, Conversations with His Nephew,'' (Cambridge: Cambridge University Press, 1999), p. xi.</ref>
the works of ], Ibn Zezla (Byngezla), ], ], al-Qifti, and Albe'thar.<ref>D. Campbell, ''Arabian Medicine and Its Influence on the Middle Ages'', p. 4.</ref>
]'s ''Algebra'',<ref name=Katz>V. J. Katz, ''A History of Mathematics: An Introduction'', p. 291.</ref>
the ] works of ], and the ''De Proprietatibus Elementorum'', an Arabic work on ] written by a ].<ref name=Bieber/> By the beginning of the 13th century, ] translated the ] and various ].<ref>M.-T. d'Alverny, "Translations and Translators," pp. 429, 455</ref>

] presented the first complete European account of the ] from ] in his '']'' (1202).<ref name=Bieber>Jerome B. Bieber. , ].</ref> ]'s ''] as-Sanjari'' was translated into ] by ] in the 13th century and was studied in the ].<ref>David Pingree (1964), "Gregory Chioniades and Palaeologan Astronomy", ''Dumbarton Oaks Papers'' '''18''', p. 135-160.</ref> The ] to the ] made by ], ], ] (Urdi lemma), ] (]) and ] were later adapted into the ] model. ]'s (Alkindus) law of ] ] influenced ]'s law of ] gravity, which in turn inspired ]. ]'s ''Ta'rikh al-Hind'' and ''Kitab al-qanun al-Mas’udi'' were translated into Latin as ''Indica'' and ''Canon Mas’udicus'' respectively. ]' commentary on the last part of ]'s '']'' concerning ] was translated into ] by Andrea Alpago (d. 1522) and published in Europe in 1547. Ibn al-Nafis' ''Commentary on the Anatomy of Canon of Avicenna'', which first described ], may have also been translated into Latin and available in Europe around that time, and it may have had an influence on ] and ].<ref>, Islamic Medical Manuscripts, ].</ref> Translations of ]'s works on algebra and geometry were later influential in the development of ] in Europe in the 18th century.<ref>D. S. Kasir (1931). ''The Algebra of Omar Khayyam'', p. 6-7. ], ], ].</ref> English translations of the ]'s '']'' and Arabic ]s of ]'s ''al-Fawz al-Asghar'' were available in European universities by the early 19th century, and these works possibly had an influence on ], who was a student of Arabic, and his inception of ].<ref name=Hamidullah/>

==Fields==
In the ], especially during the ], Muslim scholars made significant advances in ], ], ], ], ], and many other fields. During this time, ] developed and was often pivotal in scientific debates — key figures were usually ]s and ]s.

===Applied sciences===
]-operated ] ] ] ] of ], the father of modern day ].]]
] ]s of ], the father of ].]]
{{Main|Inventions in the Muslim world}} {{See|Timeline of science and technology in the Islamic world}}

] wrote in the ''History of Medicine'':
{{quote|"The ]s themselves were the originators not only of ], ], and ], but of many of the so-called improvements or refinements of civilization, such as ]s, ]-], ], ], ] ]s, ]s, ]s, etc..."}}

In the ]s, a significant number of inventions and technologies were produced by medieval Muslim scientists and engineers, including inventors such as ], ], and especially ], who is considered the father of ]<ref name=Vallely/> and the father of modern day engineering.<ref>, MTE Studios.</ref> Some of the inventions produced by medieval Muslim scientists and engineers include the ], ], ], ], ], pure ], ], ], ], ], ], ], ] ], ], ], ], ], ], ] ] ] ], ]s driven by ] and ]s, ] ], ], ], pointed ], ], bone ], ], surgical ], ], ], ], ], ], ], three-course ], ] and ], ], modern ], ], ] ]s and ]s, ], and royal ].<ref name=Vallely/>

===Astrology===
{{Main|Islamic astrology}}

Islamic astrology, in ] ''ilm al-nujum''is the study of the heavens by early ]s. In early Arabic sources, ''ilm al-nujum'' was used to refer to both ] and ]. In ] sources, however, a clear distinction was made between ''ilm al-nujum'' (science of the candy) or ''ilm al-falak'' (science of the celestial orbs), referring to astrology, and'' ilm al-haya'' (science of the figure of the heavens), referring to astronomy. Both fields were rooted in ], ], and ] traditions. Despite consistent critiques of astrology by scientists and religious scholars, astrological prognostications required a fair amount of exact scientific knowledge and thus gave partial incentive for the study and development of astronomy.

] was a ] who resolved significant problems in the ] with the ], which played an important role in ].]]

===Astronomy===
{{Main|Islamic astronomy}}

In ], the work of ] astronomer ], particularly the '']'', and the ] work of ], were significantly refined over the years by ] astronomers. The astronomical tables of ] and of ] served as important sources of information for ]ized European thinkers rediscovering the works of astronomy, where extensive interest in astrology was discouraged.

From the 11th century, Muslim astronomers began questioning the ], beginning with ], and they were the first to conduct elaborate ]s related to astronomical phenomena, beginning with ]'s introduction of the ] into astronomy.<ref name=Zahoor>Dr. A. Zahoor (1997), , ].</ref> Many of them made changes and corrections to the Ptolemaic model within a ] framework. In particular, the corrections of ], ], ], ] (]), ] (Urdi lemma) and ] were later adapted into the ] model.<ref>M. Gill (2005). </ref><ref>Richard Covington (May-June 2007). "Rediscovering Arabic science", '']'', p. 2-16.</ref> Several Muslim astronomers also discussed the possibility of a ] model with ] orbits, such as ], ], ], Abu Said Sinjari, 'Umar al-Katibi al-], and ].<ref>A. Baker and L. Chapter (2002), "Part 4: The Sciences". In M. M. Sharif, "A History of Muslim Philosophy", ''Philosophia Islamica''.</ref>

Other developments in astronomy include al-Biruni's discovery of the ] ] being a collection of numerous ] ]s,<ref name=Zahoor/> and the development of a planetary model without any ] by ] (Avempace).<ref>Bernard R. Goldstein (March 1972). "Theory and Observation in Medieval Astronomy", ''Isis'' '''63''' (1), p. 39-47 .</ref> The optical writings of Ibn al-Haytham are reported to have laid the foundations for the later European development of ] astronomy.<ref>O. S. Marshall (1950). "Alhazen and the Telescope", ''Astronomical Society of the Pacific Leaflets'' '''6''', pp. 4-11.</ref>

===Botany===
:''Further information: ]''

During the Muslim ], Muslim scientists made significant advances in the field of ]. They developed a scientific approach to botany and ] based on three major elements; sophisticated systems of ], highly developed ] techniques, and the introduction of a large variety of ] which were studied and catalogued according to the ], type of ] and amount of ] they require. Numerous ]s on ] were produced, with highly accurate ] and details.<ref>Al-Hassani, Woodcock and Saoud (2007), ''Muslim heritage in Our World'', FSTC publishing, 2nd Edition, p. 102-123.</ref>

Muslim botanists and agriculturists demonstrated agrotechnical and ] knowledge in areas such as ], ], ], ] occupation, and the ] and ] of agricultural ]s. They also demosntrated agricultural knowledge in areas such as ], agricultural ], ], preparation of soil, ], spreading of ], killing ]s, ], cutting ]s, ], ] ], ], ], the care and improvement of ] and ]s, and the ] and storage of ].<ref>Toufic Fahd (1996), "Botany and agriculture", in Roshdi Rashed, ed., '']'', Vol. 3, p. 813-852 . ], London and New York.</ref>

===Chemistry===
{{main|Alchemy (Islam)}}
] (Geber) was a ] who is regarded as the father of ] and a founder of the ] industry.]]

The 9th century ], ] (Jabir ibn Hayyan), is considered the father of ],<ref>John Warren (2005). "War and the Cultural Heritage of Iraq: a sadly mismanaged affair", ''Third World Quarterly'', Volume 26, Issue 4 & 5, p. 815-830.</ref><ref>Dr. A. Zahoor (1997). . ].</ref><ref name=Vallely>Paul Vallely, , '']'', 11 March 2006.</ref> for introducing the first ]al ] for chemistry, as well as the ], ], ], ], ], ], ], ], and ].<ref name=Vallely/>

] was the first to debunk the theory of the ],<ref>Felix Klein-Frank (2001), "Al-Kindi", in ] & ], ''History of Islamic Philosophy'', p. 174. London: ].</ref> followed by ]<ref>Michael E. Marmura (1965). "''An Introduction to Islamic Cosmological Doctrines. Conceptions of Nature and Methods Used for Its Study by the Ikhwan Al-Safa'an, Al-Biruni, and Ibn Sina'' by Seyyed ]", ''Speculum'' '''40''' (4), p. 744-746.</ref> and ].<ref>] (1938). ''The Making of Humanity'', p. 196-197.</ref> Avicenna also invented ] and produced the first ]s, which led to the development of ]. ] first distilled ], invented ] and ]s, ]s and modern recipes for ], and ]s. ] regarded the Muslim chemists as the founders of chemistry.<ref>Dr. Kasem Ajram (1992). ''Miracle of Islamic Science'', Appendix B. Knowledge House Publishers. ISBN 0911119434.</ref>

] wrote in ''] IV: The Age of Faith'':
{{quote|"Chemistry as a science was almost created by the ]; for in this field, where the ] (so far as we know) were confined to industrial experience and vague ], the ]s introduced precise ], ], and careful records. They invented and named the ] (al-anbiq), chemically analyzed innumerable ]s, composed ], distinguished ]s and ]s, investigated their affinities, studied and manufactured hundreds of ]s. Alchemy, which the Moslems inherited from Egypt, contributed to chemistry by a thousand incidental discoveries, and by its method, which was the most scientific of all medieval operations."<ref name=Durant>] (1980). ''The Age of Faith (], Volume 4)'', p. 162-186. Simon & Schuster. ISBN 0671012002.</ref>}}

], the father of the ], wrote in the ''Introduction to the History of Science'':
{{quote|"We find in his (Jabir, Geber) writings remarkably sound views on methods of chemical research, a theory on the ] formation of ]s (the six metals differ essentially because of different proportions of ] and ] in them); preparation of various substances (e.g., basic ], ] and ] from their ])."<ref name=Zahoor>Dr. A. Zahoor and Dr. Z. Haq (1997). , .</ref>}}

===Earth sciences===
] was a ] who is regarded as the father of ], the father of ], "the first ]" and one of the first ].]]

Muslim scientists, notably ], made a number of contributions to the ]s. In particular, Biruni is regarded as the father of ] for his important contributions to the field,<ref name=Ahmed/><ref>H. Mowlana (2001). "Information in the Arab World", ''Cooperation South Journal'' '''1'''.</ref> along with his significant contributions to ] and ].

Among his writings on geology, Biruni wrote the following on the ]:
{{quote|"But if you see the soil of ] with your own eyes and meditate on its nature, if you consider the rounded stones found in earth however deeply you dig, stones that are huge near the mountains and where the rivers have a violent current: stones that are of smaller size at a greater distance from the mountains and where the streams flow more slowly: stones that appear pulverised in the shape of sand where the streams begin to stagnate near their mouths and near the sea - if you consider all this you can scarcely help thinking that India was once a sea, which by degrees has been filled up by the alluvium of the streams."<ref>] (1984), "Islam and Science". In C. H. Lai (1987), ''Ideals and Realities: Selected Essays of Abdus Salam'', 2nd ed., World Scientific, Singapore, p. 179-213.</ref>}}

John J. O'Connor and Edmund F. Robertson write in the '']'':
{{quote|"Important contributions to geodesy and geography were also made by al-Biruni. He introduced techniques to measure the earth and distances on it using ]. He found the ] of the earth to be 6339.6 km, a value not obtained in the ] until the 16th century. His ''Masudic canon'' contains a table giving the coordinates of six hundred places, almost all of which he had direct knowledge."<ref name=Biruni/>}}

] wrote in the ''History of Medicine'':
{{quote|"The ]s themselves were the originators not only of ], ], and ], but of many of the so-called improvements or refinements of civilization..."}}

], the father of the history of science, wrote in the ''Introduction to the History of Science'':
{{quote|"We find in his (Jabir, Geber) writings remarkably sound views on methods of chemical research, a theory on the ] formation of ]s (the six metals differ essentially because of different proportions of ] and ] in them)..."<ref name=Zahoor/>}}

In ], ] hypothesized on two causes of ]s in '']''. In ], the ] drawn by the ] cartographer ] in 1513, was one of the earliest ]s to include the ], and perhaps the first to include ]. His map of the world was considered the most accurate in the 16th century.


===Mathematics=== ===Mathematics===
]'s ''Algebra'']]
{{Main|Islamic mathematics}}
{{Main|Mathematics in medieval Islam}}
], the father of ] and father of ]s.]]


Islamic mathematicians gathered, organised and clarified the mathematics they inherited from ancient Egypt, Greece, India, Mesopotamia and Persia, and went on to make innovations of their own. Islamic mathematics covered ], ] and ]. Algebra was mainly used for recreation: it had few practical applications at that time. Geometry was studied at different levels. Some texts contain practical geometrical rules for surveying and for measuring figures. Theoretical geometry was a necessary prerequisite for understanding astronomy and optics, and it required years of concentrated work. Early in the Abbasid caliphate (founded 750), soon after the foundation of Baghdad in 762, some mathematical knowledge was assimilated by ]'s group of scientists from the pre-Islamic Persian tradition in astronomy. Astronomers from India were invited to the court of the caliph in the late eighth century; they explained the rudimentary ] techniques used in Indian astronomy. Ancient Greek works such as ]'s '']'' and ] were translated into Arabic. By the second half of the ninth century, Islamic mathematicians were already making contributions to the most sophisticated parts of Greek geometry. Islamic mathematics reached its apogee in the Eastern part of the Islamic world between the tenth and twelfth centuries. Most medieval Islamic mathematicians wrote in Arabic, others in Persian.<ref>{{cite book |last=Meri |first=Josef W. |title=Medieval Islamic Civilization, Volume 1: An Encyclopedia |date=January 2006 |publisher=] |isbn=978-0-415-96691-7 |pages=484–485}}</ref><ref>Turner ]</ref><ref>{{cite journal |first1=Jan P. |last1=Hogendijk |last2=Berggren |first2=J. L. |title=''Episodes in the Mathematics of Medieval Islam'' by J. Lennart Berggren |journal=Journal of the American Oriental Society |volume=109 |issue=4 |year=1989 |pages=697–698 |doi=10.2307/604119 |jstor=604119}}</ref>
John J. O'Connor and Edmund F. Robertson wrote in the '']'':
{{quote|"Recent research paints a new picture of the debt that we owe to Islamic ]. Certainly many of the ideas which were previously thought to have been brilliant new conceptions due to European mathematicians of the sixteenth, seventeenth and eighteenth centuries are now known to have been developed by Arabic/Islamic mathematicians around four centuries earlier."<ref>John J. O'Connor and Edmund F. Robertson (1999). '']''.</ref>}}


]'s "Cubic equation and intersection of ]"]]
] (780-850), from whose name the word ] derives, contributed significantly to ], which is named after his book, '']'', the first book on ].<ref>Eglash (1999), p.61</ref> He also introduced what is now known as ], which originally came from ], though Muslim mathematicians did make several refinements to the number system, such as the introduction of ] notation. ] (801-873) was a pioneer in ] and ]. He gave the first known recorded explanations of ] and ] in ''A Manuscript on Deciphering Cryptographic Messages''.<ref>Simon Singh, ''The Code Book'', p. 14-20.</ref><ref>{{cite web |url=http://www.muslimheritage.com/topics/default.cfm?ArticleID=372 |title=Al-Kindi, Cryptgraphy, Codebreaking and Ciphers |accessdate=2007-01-12 |format=HTML}}</ref>


] (8th–9th centuries) was instrumental in the adoption of the ] and the development of ], introduced methods of simplifying equations, and used ] in his proofs.<ref>] (1990). "Al-Khwārizmī, Abu Jaʿfar Muḥammad ibn Mūsā". In Gillispie, Charles Coulston. ''Dictionary of Scientific Biography''. 7. New York: Charles Scribner's Sons. {{ISBN|978-0-684-16962-0}}.</ref><ref>Masood ]</ref> He was the first to treat algebra as an independent discipline in its own right,<ref name="Gandz">{{citation |last=Gandz |first=S. |title=The Sources of Al-Khowārizmī's Algebra |journal=] |volume=1 |year=1936 |pages=263–277|doi=10.1086/368426 |s2cid=60770737 }}, page 263–277: "In a sense, al-Khwarizmi is more entitled to be called "the father of algebra" than Diophantus because al-Khwarizmi is the first to teach algebra in an elementary form and for its own sake, Diophantus is primarily concerned with the theory of numbers".</ref> and presented the first systematic solution of ] and ]s.<ref name="Maher">Maher, P. (1998). From Al-Jabr to Algebra. Mathematics in School, 27(4), 14–15.</ref>{{rp|14}}
The first known ] by ] appears in a book written by ] around 1000 AD, who used it to prove the ], ], and the sum of ] ].<ref>Victor J. Katz (1998). ''History of Mathematics: An Introduction'', p. 255-259. ]. ISBN 0321016181.</ref> The ] of mathematics, F. Woepcke,<ref>F. Woepcke (1853). ''Extrait du Fakhri, traité d'Algèbre par Abou Bekr Mohammed Ben Alhacan Alkarkhi''. ].</ref> praised Al-Karaji for being "the first who introduced the ] of ]ic ]." ] was the first mathematician to derive the formula for the sum of the ]s, and using the method of induction, he developed a method for determining the general formula for the sum of any integral ], which was fundamental to the development of integral calculus.<ref>Victor J. Katz (1995). "Ideas of Calculus in Islam and India", ''Mathematics Magazine'' '''68''' (3), p. 163-174.</ref> The 11th century ]-mathematician ] was the first to find general ] solutions of ]s and laid the foundations for the development of ] and ]. ] (1135-1213) found algebraic and ] solutions to cubic equations and was the first to discover the ] of ], an important result in differential calculus.<ref>J. L. Berggren (1990). "Innovation and Tradition in Sharaf al-Din al-Tusi's Muadalat", ''Journal of the American Oriental Society'' '''110''' (2), p. 304-309.</ref>
] (801–873) worked on cryptography for the ],<ref>Masood ]</ref> and gave the first known recorded explanation of ] and the first description of the method of ].<ref>{{cite journal |last=Broemeling |first=Lyle D.|title=An Account of Early Statistical Inference in Arab Cryptology |journal=The American Statistician |date=1 November 2011 |volume=65 |issue=4 |pages=255–257 |doi=10.1198/tas.2011.10191|s2cid=123537702}}</ref><ref>{{cite journal | last1=Al-Kadi | first1=Ibrahim A. | year=1992 | title=The origins of cryptology: The Arab contributions | journal=Cryptologia | volume=16 | issue=2| pages=97–126 | doi=10.1080/0161-119291866801}}</ref>
] ({{circa}} 980–1037) contributed to mathematical techniques such as ].<ref name="Masood 2009, pp.104">Masood ]</ref> ] (835–901) calculated the solution to a ] involving an exponential series.<ref>Masood ]</ref>
] ({{circa}} 870–950) attempted to describe, geometrically, the ] in his book ''Spiritual Crafts and Natural Secrets in the Details of Geometrical Figures''.<ref>Masood ]</ref> ] (1048–1131), known in the West as a poet, calculated the length of the year to within 5 decimal places, and found geometric solutions to all 13 forms of cubic equations, developing some ]s still in use.<ref>Masood ]</ref> ] (c. 1380–1429) is credited with several theorems of trigonometry, including the ], also known as Al-Kashi's Theorem. He has been credited with the invention of ], and with a ] to calculate roots. He calculated ] correctly to 17 significant figures.<ref>O'Connor, John J.; Robertson, Edmund F., "Ghiyath al-Din Jamshid Mas'ud al-Kashi", MacTutor History of Mathematics archive, University of St Andrews.</ref>


Sometime around the seventh century, Islamic scholars adopted the ], describing their use in a standard type of text ''fī l-ḥisāb al hindī'', (On the numbers of the Indians). A distinctive Western Arabic variant of the ] began to emerge around the 10th century in the ] and ] (sometimes called ''ghubar'' numerals, though the term is not always accepted), which are the direct ancestor of the modern ] used throughout the world.<ref>{{citation |first=Paul |last=Kunitzsch |chapter=The Transmission of Hindu-Arabic Numerals Reconsidered |editor1=J. P. Hogendijk |editor2=A. I. Sabra |title=The Enterprise of Science in Islam: New Perspectives |chapter-url=https://books.google.com/books?id=_AUtLNtg3nsC&pg=PA3 |year=2003 |publisher=MIT Press |isbn=978-0-262-19482-2 |pages=3–22}}</ref>
===Mechanics===
] was a ], who is considered the father of modern ] and the father of the concept of ], and regarded as one of the greatest thinkers and medical scholars in history.]]

In the ] field of ], ] (800-873) of the ] was a pioneer of ] and ], as he was the first to discover that the ] and ]s were subject to the same ] as ], unlike the ancients who believed that the celestial spheres followed their own set of physical laws different from that of Earth.<ref>] (1994). "Early Arabic Critique of Ptolemaic Cosmology: A Ninth-Century Text on the Motion of the Celestial Spheres", ''Journal for the History of Astronomy'' '''25''', p. 115-141 .</ref> In his ''Astral Motion'' and ''The Force of Attraction'', he was also the first to discover that there was a ] of ] between ],<ref>K. A. Waheed (1978). ''Islam and The Origins of Modern Science'', p. 27. Islamic Publication Ltd., Lahore.</ref> foreshadowing ].<ref>] (1938). ''The Making of Humanity'', p. 191.</ref> ] (836-901) rejected the ] and ] notions of a "natural place" for each ]. He instead proposed a theory of ] in which both the upward and downward motions are caused by ], and that the order of the universe is a result of two competing ] (''jadhb''): one of these being "between the ] and ] elements", and the other being "between all parts of each element separately".<ref>Mohammed Abattouy (2001). "Greek Mechanics in Arabic Context: Thabit ibn Qurra, al-Isfizarı and the Arabic Traditions of Aristotelian and Euclidean Mechanics", ''Science in Context'' '''14''', p. 205-206. ].</ref> ] (801-873) described an early concept of ], which some see as a precursor to the later ] developed by ] in the 20th century. Like Einstein, al-Kindi held that the physical world and physical phenomena are relative, that ], ], motion and ] are all relative to each other and not independent or ], and that they are relative to other objects and to the observer.<ref>, Foundation for Science Technology and Civilisation, 2003.</ref>

] (965-1039) discussed the theory of ] between ]es, and it seems that he was aware of the ] of ] due to ] and he discovered that the heavenly bodies "were accountable to the ]".<ref>Duhem, Pierre (1908, 1969). ''To Save the Phenomena: An Essay on the Idea of Physical theory from Plato to Galileo'', p. 28. University of Chicago Press, Chicago.</ref> Ibn al-Haytham also discovered the law of ], known as ], when he stated that a body moves ] unless an external force stops it or changes its direction of motion.<ref name=Bizri>Dr. Nader El-Bizri, "Ibn al-Haytham or Alhazen", in Josef W. Meri (2006), ''Medieval Islamic Civilization: An Encyclopaedia'', Vol. II, p. 343-345, ], New York, London.</ref> He also discovered the concept of ], part of ].<ref>Seyyed ], "The achievements of Ibn Sina in the field of science and his contributions to its philosophy", ''Islam & Science'', December 2003.</ref>

] winning physicist ] wrote the following on ]:
{{quote|"Ibn-al-Haitham (Alhazen, 965-1039 CE) was one of the greatest physicists of all time. He made experimental contributions of the highest order in optics. He enunciated that a ray of light, in passing through a medium, takes the path which is the easier and 'quicker'. In this he was anticipating ] by many centuries. He enunciated the law of ], later to become ]. Part V of ]'s "''Opus Majus''" is practically an annotation to Ibn al Haitham's ''Optics''."<ref name=Salam>] (1984), "Islam and Science". In C. H. Lai (1987), ''Ideals and Realities: Selected Essays of Abdus Salam'', 2nd ed., World Scientific, Singapore, p. 179-213.</ref>}}

] (980-1037) discovered the concept of ], when he referred to ] as being proportional to ] times ], a precursor to the concept of momentum in ].<ref name=Sayili>A. Sayili (1987), "Ibn Sīnā and Buridan on the Motion of the Projectile", ''Annals of the New York Academy of Sciences'' '''500''' (1), p. 477–482:
{{quote|"Thus he considered impetus as proportional to weight times velocity. In other words, his conception of impetus comes very close to the concept of momentum of Newtonian mechanics."}}</ref> He is thus considered the father of the fundamental concept of ] in ].<ref>Seyyed ], "Islamic Conception Of Intellectual Life", in Philip P. Wiener (ed.), ''Dictionary of the History of Ideas'', Vol. 2, p. 65, Charles Scribner's Sons, New York, 1973-1974.</ref> His theory of motion was also consistent with the concept of ] in ].<ref name=Sayili/> ] (973-1048) was the first to realize that ] is connected with non-uniform motion, part of ].<ref name=Biruni/>

In 1121, ], in ''The Book of the Balance of Wisdom'', was the first to propose that the ] and ] of a body varies depending on its distance from the centre of the Earth. This phenomenon was not proven until ] centuries later. In ], al-Khazini first clearly differentiated between ], ], and ], and he showed awareness of the weight of the air and of its decrease in ] with ], and discovered that there was greater density of water when nearer to the Earth's centre.<ref>Salah Zaimeche PhD (2005). , p. 5-7. Foundation for Science Technology and Civilization.</ref> ] (Avempace) (d. 1138) was the first to state that there is always a ] force for every force exerted, a precursor to ]'s idea of force which underlies ].<ref>] (1964), "La dynamique d’Ibn Bajja", in ''Mélanges Alexandre Koyré'', I, 442-468 , Paris.
<br>(] Abel B. Franco (October 2003). "Avempace, Projectile Motion, and Impetus Theory", ''Journal of the History of Ideas'' '''64''' (4), p. 521-546 .)</ref> His theory of motion had an important influence on later physicists like ].<ref>Ernest A. Moody (1951). "Galileo and Avempace: The Dynamics of the Leaning Tower Experiment (I)", ''Journal of the History of Ideas'' '''12''' (2), p. 163-193.</ref> ] (1080-1165) was the first to negate ]'s idea that a constant ] produces uniform motion, as he realized that a force applied continuously produces ], a fundamental law of ] and an early foreshadowing of ].<ref>{{cite encyclopedia
| last = ]
| title = Abu'l-Barakāt al-Baghdādī , Hibat Allah
| encyclopedia = ]
| volume = 1
| pages = 26-28
| publisher = Charles Scribner's Sons
| location = New York
| date = 1970
| isbn = 0684101149
}}
<br>(] Abel B. Franco (October 2003). "Avempace, Projectile Motion, and Impetus Theory", ''Journal of the History of Ideas'' '''64''' (4), p. 521-546 .)</ref> Like Newton, he described acceleration as the rate of change of ].<ref>A. C. Crombie, ''Augustine to Galileo 2'', p. 67.</ref> ] (1126–1198) was the first to define and measure ] as "the rate at which ] is done in changing the ] condition of a material ]"<ref>Ernest A. Moody (June 1951). "Galileo and Avempace: The Dynamics of the Leaning Tower Experiment (II)", ''Journal of the History of Ideas'' '''12''' (3), p. 375-422 .</ref> and the first to correctly argue "that the effect and measure of force is change in the kinetic condition of a materially ] ]."<ref>Ernest A. Moody (June 1951). "Galileo and Avempace: The Dynamics of the Leaning Tower Experiment (II)", ''Journal of the History of Ideas'' '''12''' (3), p. 375-422 .</ref>

] and ] were the first to apply ]al ]s to the fields of ] and ], particularly for determining ]s, such as those based on the theory of ]s and ]. Muslim physicists unified statics and dynamics into the science of mechanics, and they combined the fields of ] with dynamics to give birth to ]. They applied the mathematical theories of ]s and ] techniques, and introduced ]ic and fine ] techniques into the field of statics. They were also the first to generalize the thoery of the ] and the first to apply it to ] bodies. They also founded the theory of the ] ] and created the "science of ]" which was later further developed in medieval Europe. The Muslim developments in mechanics laid the foundations for the later development of ] in Renaissance Europe.<ref>Mariam Rozhanskaya and I. S. Levinova (1996), "Statics", in Roshdi Rashed, ed., '']'', Vol. 2, p. 614-642 . ], London and New York.</ref>


===Medicine=== ===Medicine===
]'s ''Anatomy'', {{circa|1450}}]]
{{main|Islamic medicine}} {{see|Ophthalmology in medieval Islam|Bimaristan}}
{{Main| Medicine in the medieval Islamic world}}
] (Abulcasis), the father of modern ].]]


Islamic society paid careful attention to medicine, following a '']'' enjoining the preservation of good health. Its physicians inherited knowledge and traditional medical beliefs from the civilisations of classical Greece, Rome, Syria, Persia and India. These included the writings of ] such as on the theory of the ], and the theories of ].<ref>Turner ]</ref> ] ({{circa}} 865–925) identified smallpox and measles, and recognized fever as a part of the body's defenses. He wrote a 23-volume compendium of Chinese, Indian, Persian, Syriac and Greek medicine. al-Razi questioned the classical Greek medical theory of how the four humours regulate ]. He challenged Galen's work on several fronts, including the treatment of ], arguing that it was effective.<ref>Masood ]</ref>
Muslim ]s made many significant advances and contributions to ], including ], ], ], ], ], ], and the ]. Muslim physicians set up some of the earliest dedicated ]s, which later spread to Europe during the ]s, inspired by the hospitals in the Middle East.<ref name=Sarton>], ''Introduction to the History of Science''.<br>(] Dr. A. Zahoor and Dr. Z. Haq (1997), , Cyberistan.</ref>
] (936–1013) was a surgeon whose most important surviving work is referred to as '']'' (Medical Knowledge). It is a 30-volume set mainly discussing medical symptoms, treatments, and pharmacology. The last volume, on surgery, describes surgical instruments, supplies, and pioneering procedures.<ref>Masood ]</ref> Avicenna (c. 980–1037) wrote the major medical textbook, '']''.<ref name="Masood 2009, pp.104"/> ] (1213–1288) wrote an influential book on medicine; it largely replaced Avicenna's ''Canon'' in the Islamic world. He wrote commentaries on Galen and on Avicenna's works. One of these commentaries, discovered in 1924, described ].<ref>Masood ]</ref><ref>Turner ]</ref>


===Optics and ophthalmology===
] (Rhazes) (865-925) recorded ] cases of his own experience and provided very useful recordings of various ]s. His ''Comprehensive Book of Medicine'', which introduced ] and ], was very influential in Europe. ] wrote '']'', in which he demonstrated the application of mathematics to medicine, particularly in the field of pharmacology. This includes the development of a mathematical scale to quantify the strength of ]s, and a system that would allow a doctor to determine in advance the most critical days of a patient's illness.<ref> Felix Klein-Frank (2001), ''Al-Kindi'', in ] and ], ''History of Islamic Philosophy'', p. 172. ], London.</ref>
], {{circa|1200}}]]
{{Main|Physics in the medieval Islamic world#Optics|Ophthalmology in medieval Islam}}
] (Alhazen), (965–1039 ]). A polymath, sometimes considered the father of modern ]ology due to his emphasis on experimental data and on the ] of its results.<ref name=news.bbc.co.uk>{{cite web |title=The 'first true scientist'|url=http://news.bbc.co.uk/2/hi/7810846.stm |work=BBC News |first=Jim |last=Al-Khalili |date=4 January 2009 |quote=Ibn al-Haytham is regarded as the father of the modern scientific method.}}</ref><ref>{{cite book |title=Mind, Brain, and Education Science: A Comprehensive Guide to the New Brain-Based Teaching|year=2010|publisher=W. W. Norton & Company |isbn=978-0-393-70607-9 |author=Tracey Tokuhama-Espinosa |page=39 |quote=Alhazen (or Al-Haytham; 965–1039 CE) was perhaps one of the greatest physicists of all times and a product of the Islamic Golden Age or Islamic Renaissance (7th–13th centuries). He made significant contributions to anatomy, astronomy, engineering, ], medicine, ophthalmology, philosophy, physics, psychology, and visual perception and is primarily attributed as the inventor of the scientific method, for which author Bradley Steffens (2006) describes him as the "first scientist".}}</ref>]]


Optics developed rapidly in this period. By the ninth century, there were works on physiological, geometrical and physical optics. Topics covered included mirror reflection.
] (Abulcasis), regarded as the father of modern ],<ref>A. Martin-Araguz, C. Bustamante-Martinez, Ajo V. Fernandez-Armayor, J. M. Moreno-Martinez (2002). "Neuroscience in al-Andalus and its influence on medieval scholastic medicine", ''Revista de neurología'' '''34''' (9), p. 877-892.</ref> wrote the ''Kitab ]'' (]), a 30-volume medical ] which was taught at Muslim and European ]s until the 17th century. He invented numerous ], including the first instruments unique to women,<ref name=Saad>Bashar Saad, Hassan Azaizeh, Omar Said (October 2005). "Tradition and Perspectives of Arab Herbal Medicine: A Review", ''Evidence-based Complementary and Alternative Medicine'' '''2''' (4), p. 475-479 . ].</ref> as well as the surgical uses of ] and ], the ], ], ], ], ], surgical ], ], surgical ], surgical ], and ],<ref>Khaled al-Hadidi (1978), "The Role of Muslem Scholars in Oto-rhino-Laryngology", ''The Egyptian Journal of O.R.L.'' '''4''' (1), p. 1-15. (] , Foundation for Science Technology and Civilization.)</ref> bone ],<ref name=Vallely/> and ].<ref>Zafarul-Islam Khan, , ''The Milli Gazette''.</ref>
] (809–873) wrote the book ''Ten Treatises on the Eye''; this remained influential in the West until the 17th century.<ref>Masood ]</ref>
] (810–887) developed lenses for magnification and the improvement of vision.<ref>Masood ]</ref>
] ({{circa}} 940–1000) discovered the law of refraction known as ]. He used the law to produce the first ]es that focused light without geometric aberrations.<ref>K. B. Wolf, "Geometry and dynamics in refracting systems", ''European Journal of Physics'' 16, p. 14–20, 1995.</ref><ref>R. Rashed, "A pioneer in anaclastics: Ibn Sahl on burning mirrors and lenses", ''Isis'' 81, p. 464–491, 1990</ref>


In the eleventh century ] (Alhazen, 965–1040) rejected the Greek ideas about vision, whether the Aristotelian tradition that held that the form of the perceived object entered the eye (but not its matter), or that of Euclid and Ptolemy which held that the eye emitted a ray. Al-Haytham proposed in his ''Book of Optics'' that vision occurs by way of light rays forming a cone with its vertex at the center of the eye. He suggested that light was reflected from different surfaces in different directions, thus causing objects to look different.<ref name=Dallal>{{cite book |last=Dallal |first=Ahmad |title=Islam, Science, and the Challenge of History |url=https://archive.org/details/islamsciencechal0000dall |url-access=registration |publisher=Yale University Press |date=2010 |pages=}}</ref><ref name=Lindberg>{{cite book |last=Lindberg |first=David C.|year=1976 |title=Theories of Vision from al-Kindi to Kepler |publisher=University of Chicago Press, Chicago |isbn=978-0-226-48234-7|oclc=1676198}}</ref><ref>{{cite book |last=El-Bizri |first=Nader |author-link=Nader El-Bizri |title=A Philosophical Perspective on Alhazen's Optics |work=Arabic Sciences and Philosophy, Vol. 15 |publisher=Cambridge University Press |date=2005 |pages=189–218}}</ref><ref>{{cite web |last=El-Bizri |first=Nader |url=http://www.muslimheritage.com/article/nader-el-bizri-ibn-al-haytham-introduction |publisher=Muslim Heritage |title=Ibn al-Haytham |date=30 March 2011 |access-date=9 July 2017}}</ref> He argued further that the mathematics of reflection and ] needed to be consistent with the anatomy of the eye.<ref name="Masood 2009, pp.173">Masood ]</ref> He was also an early proponent of the ], the concept that a hypothesis must be proved by experiments based on confirmable procedures or mathematical evidence, five centuries before ].<ref>{{citation |last=Ackerman |first=James S. |title=Distance Points: Essays in Theory and Renaissance Art and Architecture |date=August 1991 |location=Cambridge, Massachusetts |publisher=MIT Press |isbn=978-0-262-01122-8}}</ref><ref name="Haq">] (2009). "Science in Islam". Oxford Dictionary of the Middle Ages. {{ISSN|1703-7603}}. Retrieved 22 October 2014.</ref><ref name="Toomer">]. Toomer p.464: "Schramm sums up achievement in the development of scientific method."</ref><ref>{{cite web|url=http://www.light2015.org/Home/ScienceStories/1000-Years-of-Arabic-Optics.html|title=International Year of Light - Ibn Al-Haytham and the Legacy of Arabic Optics|access-date=2019-04-09|archive-date=2014-10-01|archive-url=https://web.archive.org/web/20141001171116/http://www.light2015.org/Home/ScienceStories/1000-Years-of-Arabic-Optics.html|url-status=dead}}</ref><ref>{{Cite news|url=http://news.bbc.co.uk/2/hi/science/nature/7810846.stm |work=BBC News |title=The 'first true scientist' |last=Al-Khalili |first=Jim |date=4 January 2009 |access-date=24 September 2013}}</ref><ref>{{Cite journal |last=Gorini |first=Rosanna |title=Al-Haytham the man of experience. First steps in the science of vision |url=http://www.ishim.net/ishimj/4/10.pdf|journal=Journal of the International Society for the History of Islamic Medicine |volume=2 |issue=4 |pages=53–55 |date=October 2003 |access-date=25 September 2008}}</ref>
], considered the father of modern medicine and one of the greatest thinkers and medical scholars in history,<ref name=Sarton/> wrote '']'' (1020) and '']'' (]), which remained standard textbooks in both Muslim and European ] until the 17th century. Avicenna's contributions include the introduction of systematic ]ation and ] into the study of ],<ref>Katharine Park (March 1990). "''Avicenna in Renaissance Italy: The Canon and Medical Teaching in Italian Universities after 1500'' by Nancy G. Siraisi", ''The Journal of Modern History'' '''62''' (1), p. 169-170.</ref> the discovery of the contagious nature of ]s, the introduction of ] to limit the spread of contagious diseases, the introduction of ]s,<ref>David W. Tschanz, MSPH, PhD (August 2003). "Arab Roots of European Medicine", ''Heart Views'' '''4''' (2).</ref> the first descriptions on ] and ] ]s,<ref>, The American Institute of Unani Medicine, 2003.</ref> the distinction of ] from ], the contagious nature of ] and ], the distribution of ]s by ] and ], and the first careful descriptions of ] troubles, ]s, ]s, and ] ]s,<ref name=Sarton/> as well the use of ] to treat ]s, and the separation of ] from ], which was important to the development of the ].<ref name=Saad/>


===Pharmacology===
In 1021, ] (Alhacen) made important advances in ], as he studied and correctly explained the process of ] and ] for the first time in his '']'' (1021).<ref name=Saad/>
] teaching the use of drugs. 15th-century ''Great Canon of Avicenna'']]
{{Further|History of pharmacy}}


Advances in ] and ] in the Islamic world encouraged developments in ]. ] (Rhazes) (865–915) promoted the medical uses of chemical compounds. ] (Abulcasis) (936–1013) pioneered the preparation of medicines by ] and ]. His ''Liber servitoris'' provides instructions for preparing ] from which were ] the complex drugs then used. Sabur Ibn Sahl (died 869) was the first physician to describe a large variety of drugs and remedies for ailments. ], in the 10th century, wrote ''The foundations of the true properties of Remedies'', describing chemicals such as ] and ]. He distinguished between ] and ], and drew attention to the poisonous nature of ] compounds, especially copper ], and also of ] compounds. ] (973–1050) wrote the ''Kitab al-Saydalah'' (''The Book of Drugs''), describing in detail the properties of drugs, the role of pharmacy and the duties of the pharmacist. ] (Avicenna) described 700 preparations, their properties, their mode of action and their indications. He devoted a whole volume to simples in '']''. Works by ] ({{circa}} 925–1015) and by ] (1008–1074) were printed in ] more than fifty times, appearing as ''De Medicinis universalibus et particularibus'' by ] (died 1015) and as the ''Medicamentis simplicibus'' by ] (c. 997 – 1074) respectively. ] (1250–1316) translated and added a supplement to the work of al-Mardini under the title ''De Veneris''. ] (1197–1248), in his ''Al-Jami fi al-Tibb'', described a thousand simples and drugs based directly on Mediterranean plants collected along the entire coast between Syria and Spain, for the first time exceeding the coverage provided by ] in classical times.<ref>{{cite book |last=Levey |first=M. |date=1973 |title=Early Arabic Pharmacology |publisher=E. J. Brill}}</ref><ref name=Turner138/> Islamic physicians such as Ibn Sina described ] for determining the efficacy of medical ]s and ].<ref name="MeinartTonascia">{{cite book |first1=Curtis L. |last1=Meinert |first2=Susan |last2=Tonascia |title=Clinical trials: design, conduct, and analysis |year=1986 |publisher=] |page=3 |url=https://books.google.com/books?id=i1oAxuE29MUC&pg=PA3 |isbn=978-0-19-503568-1 }}</ref>
In 1242, ] was the first to describe ] and ]. Ibn al-Lubudi (1210-1267) rejected the theory of four ] supported by ] and ], discovered that the ] and its preservation depend exclusively upon ], rejected Galen's idea that women can produce ], and discovered that the movement of ] are not dependent upon the movement of the ], that the heart is the first organ to form in a ]' body (rather than the ] as claimed by Hippocrates), and that the ]s forming the ] can grow into ]s.<ref>L. Leclerc (1876), ''Histoire de la medecine Arabe'', vol. 2, p. 161, ]. <br> (] Salah Zaimeche, , Foundation for Science Technology and Civilisation)</ref>


===Physics===
The ''Tashrih al-badan'' (''Anatomy of the body'') of ] (c. 1390) contained comprehensive diagrams of the body's structural, ] and ]s.<ref>H. R. Turner (1997), p. 136—138.</ref> During the ] ] in 14th century ], Ibn Khatima and Ibn al-Khatib discovered that infecious diseases are caused by ]s which enter the human body.<ref>Ibrahim B. Syed, Ph.D. (2002). "Islamic Medicine: 1000 years ahead of its times", '']'' '''2''', p. 2-9.</ref> Other medical innovations first introduced by Muslim physicians include the discovery of the ], the introduction of ], the use of ], and the combination of medicine with other ]s (including ], ], ], and ]),<ref name=Saad/> as well as the invention of the ] ] by Ammar ibn Ali al-Mawsili in 9th century ], the first ]s in ] (754), the distinction between medicine and pharmacy by the 12th century, and the discovery of at least 2,000 medicinal and ]s.<ref>S. Hadzovic (1997). "Pharmacy and the great contribution of Arab-Islamic science to its development", ''Med Arh.'' '''51''' (1-2), p. 47-50.</ref>
]'s treatise on mechanical devices, c. 850]]
{{Main|Physics in the medieval Islamic world}}


The fields of physics studied in this period, apart from optics and astronomy which are described separately, are aspects of ]: ], ], ] and ]. In the sixth century ] ({{circa|490|570}}) rejected the ] view of motion. He argued instead that an object acquires an inclination to move when it has a motive power impressed on it. In the eleventh century Ibn Sina adopted roughly the same idea, namely that a moving object has force which is dissipated by external agents like air resistance.<ref name="ibn sina and buridan">{{cite journal |last=Sayili |first=Aydin |title=Ibn Sina and Buridan on the Motion the Projectile |journal=Annals of the New York Academy of Sciences |volume=500 |issue=1 |pages=477–482 |doi=10.1111/j.1749-6632.1987.tb37219.x |year=1987 |s2cid=84784804 }}</ref> Ibn Sina distinguished between "force" and "inclination" (''mayl''); he claimed that an object gained ''mayl'' when the object is in opposition to its natural motion. He concluded that continuation of motion depends on the inclination that is transferred to the object, and that the object remains in motion until the ''mayl'' is spent. He also claimed that a projectile in a vacuum would not stop unless it is acted upon. That view accords with ], on inertia.<ref name=Espinoza>{{cite journal |last=Espinoza |first=Fernando |title=An Analysis of the Historical Development of Ideas About Motion and its Implications for Teaching |journal=Physics Education |volume=40 |issue=2 |doi=10.1088/0031-9120/40/2/002 |year=2005 |pages=139–146|bibcode=2005PhyEd..40..139E |s2cid=250809354 }}</ref> As a non-Aristotelian suggestion, it was essentially abandoned until it was described as "impetus" by ] (c. 1295–1363), who was likely influenced by Ibn Sina's ].<ref name="ibn sina and buridan"/>
===Optics===
{{see|Book of Optics}}
]'s manuscript showing his discovery of the law of ] (]).]]
] (Alhacen) invented the ] and ] for his experiments on ] and ].]]


In the ''Shadows'', ] (973–1048) describes non-uniform motion as the result of acceleration.<ref name="al-biruni">{{cite web| title=Biography of Al-Biruni| publisher=University of St. Andrews, Scotland |url=http://www-history.mcs.st-andrews.ac.uk/Biographies/Al-Biruni.html}}</ref> Ibn-Sina's theory of ''mayl'' tried to relate the velocity and weight of a moving object, a precursor of the concept of ].<ref name="Nasr & Razavi">{{cite book |last1=Nasr |first1=S. H. |last2=Razavi |first2=M. A. |title=The Islamic Intellectual Tradition in Persia |date=1996 |publisher=Routledge}}</ref> Aristotle's theory of motion stated that a constant force produces a uniform motion; ] (c. 1080 – 1164/5) disagreed, arguing that velocity and acceleration are two different things, and that force is proportional to acceleration, not to velocity.<ref name=Gutman>{{cite book |title=Studies in Arabic versions of Greek texts and in mediaeval science |volume=2 |first=Shlomo |last=Pines |author-link=Shlomo Pines |publisher=Brill Publishers |year=1986 |isbn=978-965-223-626-5 |page=203}}</ref>
In the ] field of ], ] (c. 940-1000), a mathematician and physicist connected with the court of ], wrote a treatise ''On Burning Mirrors and Lenses'' in 984 in which he set out his understanding of how ]s and ]es bend and focus ]. Ibn Sahl is now credited with first discovering the law of ], usually called ].<ref>K. B. Wolf, "Geometry and dynamics in refracting systems", ''European Journal of Physics'' '''16''', p. 14-20, 1995.</ref><ref name=rashed90>R. Rashed, "A pioneer in anaclastics: Ibn Sahl on burning mirrors and lenses", '']'' '''81''', p. 464–491, 1990.</ref> He used this law to work out the shapes of lenses that focus light with no geometric aberrations, known as ]es.


], Jafar-Muhammad, Ahmad and al-Hasan (c. early 9th century) invented automated devices described in their ].<ref>Masood ]</ref><ref>{{Cite book |last=Lindberg |first=David |title=Science in the Middle Ages |publisher=University of Chicago Press |year=1978 |pages=23, 56}}</ref><ref>{{Cite book |editor-last=Selin |editor-first=Helaine |editor-link=Helaine Selin |title=Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures |publisher=Kluwer Academic Publishers |year=1997 |pages=151, 235, 375}}</ref> Advances on the subject were also made by ] and ].
] (Alhacen) (965-1039), the father of ] and the pioneer of the ], in his '']'', developed a broad theory of ] and ] that explained ], using ] and ], which stated that each point on an illuminated area or object radiates ] rays in every direction, but that only one ray from each point, which strikes the eye perpendicularly, can be seen. The other rays strike at different angles and are not seen. He used the example of the ] and ], which produces an inverted image, to support his argument. This contradicted Ptolemy's theory of vision that objects are seen by rays of light emanating from the eyes. Alhacen held light rays to be streams of minute particles that travelled at a ]. He improved accurately described the ], and discovered the laws of ].

He also carried out the first experiments on the dispersion of light into its constituent colours. His major work ''Kitab al-Manazir'' was translated into ] in the ], as well as his book dealing with the colors of sunset. He dealt at length with the theory of various physical phenomena like ]s, ]s, and the ]. He also attempted to explain ] and the ]. Through these extensive researches on optics, he is considered the father of modern ].

Ibn al-Haytham also correctly argued that we see objects because the sun's rays of light, which he believed to be streams of tiny particles traveling in straight lines, are reflected from objects into our eyes. He understood that light must travel at a large but finite velocity, and that refraction is caused by the velocity being different in different substances. He also studied spherical and parabolic mirrors, and understood how refraction by a lens will allow images to be focused and magnification to take place. He understood mathematically why a spherical mirror produces aberration.

Robert S. Elliot wrote the following on ] (Alhacen):
{{quote|"Alhazen was one of the ablest students of optics of all times and published a seven-volume treatise on this subject which had great celebrity throughout the medieval period and strongly influenced ], notably that of Roger Bacon and Kepler. This treatise discussed ] and ] mirrors in both ] and ] geometries, anticipated ], and considered refraction and the magnifying power of lenses. It contained a remarkably lucid description of the optical system of the eye, which study led Alhazen to the belief that light consists of rays which originate in the object seen, and not in the eye, a view contrary to that of Euclid and Ptolemy."<ref>R. S. Elliott (1966). ''Electromagnetics'', Chapter 1. ].</ref>}}

] (980-1037) agreed that the ] is finite, as he "observed that if the perception of light is due to the emission of some sort of particles by a luminous source, the speed of light must be finite."<ref>], ''Introduction to the History of Science'', Vol. 1, p. 710.</ref> ] (973-1048) also agreed that light has a finite speed, and he was the first to discover that the speed of light is much faster than the ].<ref name=Biruni/> ] (1236-1311) and ] (1260-1320) gave the first correct explanations for the ] phenomenon.<ref>{{MacTutor|id=Al-Farisi|title=Al-Farisi}}</ref>

] (Rhazes) was a ] who made significant advances in ] and wrote the earliest texts on ], ], and ].]]

===Psychology===
{{see|Islamic medicine|Book of Optics}}

In ], the Arab physician ] (Rhazes) (865-925) was the first to study ] and made significant advances in ] in his landmark texts ''El-Mansuri'' and ''Al-Hawi'', which presented definitions, symptoms, and treatments for problems related to ] and ]. He also ran the psychiatric ward of a ] hospital. Such institutions could not exist in Europe at the time because of fear of ]s.

] is considered the founder of ] and ],<ref name=Khaleefa>Omar Khaleefa (Summer 1999). "Who Is the Founder of Psychophysics and Experimental Psychology?", ''American Journal of Islamic Social Sciences'' '''16''' (2).</ref> for his pioneering work on the ] of ] in the '']''.<ref name=Steffens/> In Book III of the '']'', ] was the first ] to argue that vision occurs in the brain, rather than the eyes. He pointed out that personal experience has an affect on what people see and how they see, and that vision and perception are subjective. He explained possible errors in vision in detail, and as an example, describes how a small child with less experience may have more difficulty interpreting what he/she sees. He also gives an example of an adult that can make mistakes in vision because of how one's experience suggests that he/she is seeing one thing, when he/she is really seeing something else.<ref name=Steffens>Bradley Steffens (2006). ''Ibn al-Haytham: First Scientist'', Chapter 5. Morgan Reynolds Publishing. ISBN 1599350246.</ref>

Ibn al-Haytham was also the first to combine physics and psychology to form psychophysics, and his investigations and experiments on psychology and visual perception included ], variations in ], sensation of ], ] of colours, perception of ], the psychological explanation of the ], and ].<ref name=Khaleefa/>

===Social sciences===
{{see|Islamic sociology|Early Muslim sociology|Historiography of early Islam}}

Significant contributions were made to the ] in the Islamic civilization.

] (973-1048) has been described as "the first ]".<ref name=Ahmed>Akbar S. Ahmed (1984). "Al-Beruni: The First Anthropologist", ''RAIN'' '''60''', p. 9-10.</ref> He wrote detailed comparative studies on the ] of peoples, religions and cultures in the ], ] and ]. Biruni's anthropology of religion was only possible for a scholar deeply immersed in the lore of other nations.<ref>J. T. Walbridge (1998). "Explaining Away the Greek Gods in Islam", ''Journal of the History of Ideas'' '''59''' (3), p. 389-403.</ref>
Biruni has also been praised by several scholars for his ]ic anthropology.<ref>Richard Tapper (1995). "Islamic Anthropology" and the "Anthropology of Islam", ''Anthropological Quarterly'' '''68''' (3), Anthropological Analysis and Islamic Texts, p. 185-193.</ref> Biruni is also regarded as the father of ].<ref>Zafarul-Islam Khan, , ''The Milli Gazette''.</ref> ] (d. 990) wrote some of the earliest comments on the ], which included a comparison between the "ancients" (including the ancient ]ns, ], ] and ]) and the "modern scholars" (the Muslim scientists of his time).<ref>] (1950). "Al-Asturlabi and as-Samaw'al on Scientific Progress", ''Osiris'' '''9''', p. 555-564 .</ref> ] (b. 945) also made contributions to the social sciences.

] (1332-1406) is regarded as the father of ],<ref name=Mowlana>H. Mowlana (2001). "Information in the Arab World", ''Cooperation South Journal'' '''1'''.</ref> ],<ref>Mohamad Abdalla (Summer 2007). "Ibn Khaldun on the Fate of Islamic Science after the 11th Century", ''Islam & Science'' '''5''' (1), p. 61-70.</ref> ],<ref>Salahuddin Ahmed (1999). ''A Dictionary of Muslim Names''. C. Hurst & Co. Publishers. ISBN 1850653569.</ref> the ],<ref name=Akhtar>Dr. S. W. Akhtar (1997). "The Islamic Concept of Knowledge", ''Al-Tawhid: A Quarterly Journal of Islamic Thought & Culture'' '''12''' (3).</ref> ],<ref name=Mowlana/><ref name=Akhtar/> and the ],<ref>Akbar Ahmed (2002). "Ibn Khaldun’s Understanding of Civilizations and the Dilemmas of Islam and the West Today", ''Middle East Journal'' '''56''' (1), p. 25.</ref> and is viewed as one of the forerunners of modern ]. He is best known for his '']'' (]ized as ''Prolegomenon''). Some of the ideas he introduced in the ''Muqaddimah'' include ], ] theories, ], ], ]s, ]s, the ], the ], ], the rise and fall of ]s, ] loops, ], and ].

] wrote in the ''History of Muslim Historiography'':
{{quote|"Muslim ] has at all times been united by the closest ties with the general development of scholarship in Islam, and the position of historical knowledge in MusIim education has exercised a decisive influence upon the intellectual level of historicai writing....The Muslims achieved a definite advance beyond previous historical writing in the ] understanding of ] and the systematisation of historiography. The development of modern historical writing seems to have gained considerably in speed and substance through the utilization of a Muslim Literature which enabled western historians, from the seventeenth century on, to see a large section of the world through foreign eyes. The Muslim historiography helped indirectly and modestly to shape present day historical thinking."<ref>. The Islamic Scholar.</ref>}}


===Zoology=== ===Zoology===
]. Ninth century]]
In the ] field of ], Muslim biologists developed theories on ] and ] which were widely taught in medieval Islamic schools. ], a contemporary of ], considered the "Mohammedan theory of evolution" to be developed "much farther than we are disposed to do, extending them even to ] or ] things." According to ], ideas on evolution were widespread among "common people" in the Islamic world by the 12th century.<ref>] (1878). ''History of the Conflict Between Religion and Science'', p. 154-155, 237. ISBN 1603030964.</ref>
{{Further|Kitāb al-Hayawān}}


Many ] to Syriac, then to Arabic, then to Latin in the Middle Ages. ] remained dominant in its field for two thousand years.<ref>{{cite book |last=Hoffman |first=Eva R. |title=Translating Image and Text in the Medieval Mediterranean World between the Tenth and Thirteenth Centuries|work=Mechanisms of Exchange: Transmission in Medieval Art and Architecture of the Mediterranean, ca. 1000–1500 |url=https://books.google.com/books?id=XaNjNFu8fnEC&pg=PA288 |year=2013 |publisher=Brill |isbn=978-90-04-25034-5 |pages=288–}}</ref> The '']'' (كتاب الحيوان, English: ''Book of Animals'') is a 9th-century ] translation of ''History of Animals'': 1–10, ''On the Parts of Animals'': 11–14,<ref>Kruk, R., 1979, The Arabic Version of Aristotle's ''Parts of Animals'': book XI–XIV of the Kitab al-Hayawan, Royal Netherlands Academy of Arts and Sciences, Amsterdam-Oxford 1979.</ref> and ''Generation of Animals'': 15–19.<ref>{{cite book |last1=Contadini |first1=Anna |title=A World of Beasts: A Thirteenth-Century Illustrated Arabic Book on Animals (the Kitab Na't al-Hayawan) in the Ibn Bakhtishu' Tradition) |date=2012 |publisher=Brill |location=Leiden |url=https://books.google.com/books?id=mf0xAQAAQBAJ&pg=PA39|isbn=978-90-04-22265-6 }}</ref><ref>Kruk, R., 2003, "La zoologie aristotélicienne. Tradition arabe", DPhA Supplement, 329–334</ref>
The first Muslim biologist to develop a theory on evolution was ] (781-869). He wrote on the effects of the environment on the likelihood of an animal to survive, and he first described the ] and an early form of ].<ref>Conway Zirkle (1941). Natural Selection before the "Origin of Species", ''Proceedings of the American Philosophical Society'' '''84''' (1), p. 71-123.</ref><ref>Mehmet Bayrakdar (Third Quarter, 1983). "Al-Jahiz And the Rise of Biological Evolutionism", ''The Islamic Quarterly''. ].</ref> ] wrote a book in which he argued for ] (although not natural selection), and numerous other Islamic scholars and scientists, such as ], the ], ], ], ], and ], discussed and developed these ideas. Translated into Latin, these works began to appear in the West after the ] and appear to have had an impact on Western science.


The book was mentioned by ] (died 850), and commented on by ] (Ibn Sīnā) in his '']''. ] (Ibn Bājja) and ] (Ibn Rushd) commented on and criticised ''On the Parts of Animals'' and ''Generation of Animals''.<ref>{{cite book |last=Leroi |first=Armand Marie |author-link=Armand Marie Leroi |title=The Lagoon: How Aristotle Invented Science |title-link=Aristotle's Lagoon |publisher=Bloomsbury |date=2014 |isbn=978-1-4088-3622-4 |pages=354–355}}</ref>
]'s ''al-Fawz al-Asghar'' and the ]'s '']'' (''The Epistles of Ikhwan al-Safa'') expressed evolutionary ideas on how species evolved from ], into ], and then ], then ]s, then ]s, then ]s, then ]s, and then ]s. These works were known in Europe and likely had an influence on ].<ref name=Hamidullah>] and Afzal Iqbal (1993), ''The Emergence of Islam: Lectures on the Development of Islamic World-view, Intellectual Tradition and Polity'', p. 143-144. Islamic Research Institute, Islamabad.</ref>


==Significance==
== Historiography ==
{{Further|Islamic world contributions to Medieval Europe|Latin translations of the 12th century}}
{{main|Historiography of early Islam#Historiography of Islamic science|l1=Historiography of early Islam - Historiography of Islamic science}}


Muslim scientists helped in laying the foundations for an ]al science with their contributions to the ] and their ], experimental and ] approach to scientific ].<ref>] (1980). ''The Age of Faith (], Volume 4)'', p. 162–186. Simon & Schuster. {{ISBN|978-0-671-01200-7}}. ], ''An Introduction to the History of Medicine: with Medical Chronology, Suggestions for Study and Bibliographic Data'', p. 86. {{Cite book |title=What Went Wrong? : Western Impact and Middle Eastern Response |first=Bernard |last=Lewis |publisher=] |year=2001 |isbn=978-0-19-514420-8 |page= |url=https://archive.org/details/whatwentwrongwes00lewi/page/79 }}</ref> In a more general sense, the positive achievement of Islamic science was simply to flourish, for centuries, in a wide range of institutions from observatories to libraries, ] to hospitals and courts, both at the height of the Islamic golden age and for some centuries afterwards. It did not lead to a ] like that in ], but such external comparisons are probably to be rejected as imposing "chronologically and culturally alien standards" on a successful medieval culture.<ref name=McClellanDorn2006/>
The history of science in the Islamic world, like all history, is filled with questions of interpretation. Historians of science generally consider that the study of Islamic science, like all history, must be seen within the particular circumstances of time and place. ] opened a recent overview of Arabic science by noting, "I trust no one would wish to contest the proposition that all of history is local history ... and the history of science is no exception."<ref>A. I. Sabra, Situating Arab Science: Locality versus Essence," ''Isis'', 87(1996):654-70; reprinted in Michael H. Shank, ed., The Scientific Enterprise in Antiquity and the Middle Ages," (Chicago: Univ. of Chicago Pr., 2000), pp. 215-231.</ref>


==See also==
Some scholars avoid such local historical approaches and seek to identify essential ] that apply at all times and places. The Persian philosopher and historian of science, Seyyed ] saw a more positive connection in "an Islamic science that was spiritual and antisecular" which "point the way to a new 'Islamic science' that would avoid the dehumanizing and despiritualizing mistakes of Western science."<ref>F. Jamil Ragep, "Freeing Astronomy from Philosophy: An Aspect of Islamic Influence on Science," ''Osiris'', topical issue on ''Science in Theistic Contexts: Cognitive Dimensions'', n.s. 16(2001):49-50, note 3</ref><ref>Seyyed ], </ref> Some historians of science, however, question the value of drawing boundaries that label the sciences, and the scientists who practice them, in specific cultural, civilizational, or linguistic terms.<ref>] (1999). </ref>
{{Portal|Islam|Science|Middle Ages}}
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== See also == ==References==
{{Reflist|30em}}
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==Notes== ==Notes==
{{reflist|2}} {{Notelist|30em}}


==References== ==Sources==
* {{Cite book | last=Linton | first=Christopher M. | title=From Eudoxus to Einstein—A History of Mathematical Astronomy | publisher=Cambridge University Press | year=2004 | isbn=978-0-521-82750-8 }}
* Campbell, Donald (2001). ''Arabian Medicine and Its Influence on the Middle Ages''. ]. (Reprint of the London, 1926 edition). ISBN 0415231884.
* {{Cite book |last=Masood |first=Ehsan |title=Science and Islam: A History |author-link=Ehsan Masood |publisher=Icon Books |year=2009 | isbn=978-1-785-78202-2 }}
* d'Alverny, Marie-Thérèse. "Translations and Translators", in Robert L. Benson and Giles Constable, eds., ''Renaissance and Renewal in the Twelfth Century'', p. 421-462. Cambridge: Harvard Univ. Pr., 1982.
*{{cite book | last=Eglash | first=Ron | year=1999 | title=African Fractals: Modern Computing and Indigenous Design | publisher=Rutgers University Press | id=ISBN 0-8135-2614-0}} * {{Cite book |editor1-last=McClellan |editor1-first=James E. III |editor2-last=Dorn |editor2-first=Harold |title=Science and Technology in World History |edition=2 |year=2006 |publisher=Johns Hopkins |isbn=978-0-8018-8360-6 }}
* {{Cite book |last1=Morelon |first1=Régis |last2=Rashed |first2=Roshdi |year=1996 |title=Encyclopedia of the History of Arabic Science |volume=3 |publisher=Routledge |isbn=978-0-415-12410-2 |title-link=Encyclopedia of the History of Arabic Science }}
*{{cite book | last=Hobson | first=John M. | authorlink=John Hobson | title=The Eastern Origins of Western Civilisation | publisher=Cambridge University Press | year=2004 | id=ISBN 0521547245}}
*{{cite book | last=Huff | first=Toby E. | title=The Rise of Early Modern Science: Islam, China, and the West | year=2003 | publisher=Cambridge University Press | id=ISBN 0521529948}} * {{Cite book |last=Turner |first=Howard R. |title=Science in Medieval Islam: An Illustrated Introduction |publisher=University of Texas Press |year=1997 |isbn=978-0-292-78149-8 |url-access=registration |url=https://archive.org/details/scienceinmedieva0000turn }}
* Joseph, George G. (2000). ''The Crest of the Peacock''. ]. ISBN 0691006598.
* Katz, Victor J. (1998). ''A History of Mathematics: An Introduction''. ]. ISBN 0321016181.
*{{cite book | last=Levere | first=Trevor Harvey | title=Transforming Matter: A History of Chemistry from Alchemy to the Buckyball | publisher=Johns Hopkins University Press | year=2001 | id=ISBN 0-8018-6610-3}}
*{{cite book | last=Mintz | first=Sidney W. | title=Sweetness and Power: The Place of Sugar in Modern History | year=1986 | publisher=Penguin (Non-Classics) | edition=Reprint | id=ISBN 978-0140092332}}
*{{cite book | last=Phillips | first=William D. | authorlink=William D. Phillips | coauthors=Carla Rahn Phillips, Jr. Phillips | title=The Worlds of Christopher Columbus | publisher=Cambridge University Press | year=1992| id=ISBN 052144652X}}
*{{cite book | last=Turner | first=Howard R. | title=Science in Medieval Islam: An Illustrated Introduction |
publisher=University of Texas Press | year=1997 | id=ISBN 0292781490}}


==Further reading== ==Further reading==
* {{cite book |last1=Al-Daffa |first1=Ali Abdullah |author-link=Ali Abdullah Al-Daffa |first2=J.J. |last2=Stroyls |title=Studies in the exact sciences in medieval Islam |publisher=Wiley |year=1984 |isbn=978-0-471-90320-8 |ref=none}}
<div class="references-2column">
* {{cite book|first=Ali Abdullah al-|last=Daffa|first2=J.J.|last2=Stroyls|title=Studies in the exact sciences in medieval Islam|publisher=Wiley|location=New York|year=1984|id=ISBN 0471903205}} * {{cite book |last=Hogendijk |first=Jan P. |author-link=Jan Hogendijk |author2=Sabra, Abdelhamid I. |year=2003 |title=The Enterprise of Science in Islam: New Perspectives |publisher=MIT Press |isbn=978-0-262-19482-2 |ref=none}}
*{{cite book | last=Hogendijk | first=Jan P. | coauthors=Abdelhamid I. Sabra | year=2003 | title=The Enterprise of Science in Islam: New Perspectives|publisher=MIT Press|id=ISBN 0-262-19482-1}} Reviewed by Robert G. Morrison at * {{cite book |last=Hill |first=Donald Routledge |author-link=Donald Hill |title=Islamic Science And Engineering |publisher=Edinburgh University Press |date=1993 |isbn=978-0-7486-0455-5 |ref=none}}
* {{cite book|last1=Huff|first1=Toby|author1-link=Toby Huff|date=1993|title=The Rise of Early Modern Science: Islam, China, and the West|publisher=Cambridge University Press}}
* ], ''Islamic Science And Engineering'', Edinburgh University Press (1993), ISBN 0-7486-0455-3
* {{cite book |last=Kennedy |first=Edward S. |title=Studies in the Islamic Exact Sciences |year=1983 |publisher=Syracuse University Press|isbn=978-0-8156-6067-5 |ref=none}}
* Toby E. Huff, ''The Rise of Early Modern Science: Islam, China and the West''. New York: Cambridge University Press, 1993, 2nd edition 2003. ISBN 0-521-52994-8. Reviewed by George Saliba at
* {{cite book |editor1-last=Lindberg|editor1-first=D. C.|editor1-link=David C. Lindberg|editor2-last=Shank|editor2-first=M. H.|date=2013|title=The Cambridge History of Science. Volume 2: Medieval Science|publisher=Cambridge University Press}} (chapters 1–5 cover science, mathematics and medicine in Islam)
* Toby E. Huff, "Science and Metaphysics in the Three Religions of the Books", ''Intellectual Discourse'', 8, #2 (2000): 173-198.
* {{cite book |last1=Morelon |first1=Régis |last2=Rashed |first2=Roshdi |author-link2=Roshdi Rashed |year=1996 |title=Encyclopedia of the History of Arabic Science |volume=2–3 |publisher=Routledge |isbn=978-0-415-02063-3|title-link=Encyclopedia of the History of Arabic Science |ref=none}}
*{{cite journal|last=Kennedy|first=Edward S.|title=The Arabic Heritage in the Exact Sciences|journal=Al-Abhath|volume=23|year=1970|pages=327-344}}
*{{cite book|first=Edward S.|last=Kennedy|title=Studies in the Islamic Exact Sciences|year=1983|publisher=Syracuse University Press|id=ISBN 0815660677}} * {{cite book |last=Saliba |first=George |author-link=George Saliba |title=Islamic Science and the Making of the European Renaissance |publisher=MIT Press |year=2007 |isbn=978-0-262-19557-7 |ref=none}}

*{{cite book|first=Roshdi|last=Rashed|title=]|year=1996|id=ISBN 0415020638}}
<!--Please do not add papers here, especially if you wrote them: if they are useful, use them in the relevant part of the text and cite them-->
*{{cite book|first=George|last=Saliba|authorlink=George Saliba|title=Islamic Science and the Making of the European Renaissance|publisher=The MIT Press|year=2007|id=ISBN 0262195577}}
*{{cite book|last=Seyyed Hossein Nasr|title=Islamic Science: An Illustrated Study|year=1976|publisher=Kazi Publications|id=ISBN 1567443125}}
*{{cite book|last=Seyyed Hossein Nasr|title=Science & Civilization in Islam|year=2003|edition=2nd|publisher=Islamic Texts Society|id=ISBN 1903682401}}
*{{cite book|last=Sezgin|first=Fuat|title=Geschichte Des Arabischen Schrifttums '''1''': Quranwissenschaften, Hadit, Geschichte, Fiqh, Dogmatik, Mystik|year=1997|language=German|publisher=Brill|id=ISBN 9004041532}}
*{{cite book|last=Sezgin|first=Fuat|title=Geschichte Des Arabischen Schrifttums '''2''': Poesie. Bis CA. 430 H|year=1997|language=German|publisher=Brill|id=ISBN 9004031316}}
*{{cite book|last=Sezgin|first=Fuat|title=Geschichte Des Arabischen Schrifttums '''3''': Medizin-Pharmazie Zoologie-Tierheilkunde|year=1997|language=German|publisher=Brill|id=ISBN 9004031316}}
*{{cite book|last=Sezgin|first=Fuat|title=Geschichte Des Arabischen Schrifttums '''4''': Alchimie-Chemie Botanik-Agrikultur|year=1997|language=German|publisher=Brill|id=ISBN 9004020098}}
*{{cite book|last=Sezgin|first=Fuat|title=Geschichte Des Arabischen Schrifttums '''5''': Mathematik|year=1997|language=German|publisher=Brill|id=ISBN 9004041532}}
*{{cite book|last=Sezgin|first=Fuat|title=Geschichte Des Arabischen Schrifttums '''6''': Astronomie|year=1997|language=German|publisher=Brill|id=ISBN 9004058788}}
*{{cite book|last=Sezgin|first=Fuat|title=Geschichte Des Arabischen Schrifttums '''7''': Astrologie-Meteorologie Und Verwandtes|year=1997|language=German|publisher=Brill|id=ISBN 9004061592}}
*{{cite book|last=Sezgin|first=Fuat|title=Geschichte Des Arabischen Schrifttums '''8''': Lexikographie. Bis CA. 430 H|year=1997|language=German|publisher=Brill|id=ISBN 9004068678}}
*{{cite book|last=Sezgin|first=Fuat|title=Geschichte Des Arabischen Schrifttums '''9''': Grammatik. Bis CA. 430 H|year=1997|language=German|publisher=Brill|id=ISBN 9004072616}}
*{{cite book|last=Sezgin|first=Fuat|title=Geschichte Des Arabischen Schrifttums '''X''': Mathematische Geographie und Kartographie im Islam und ihr Fortleben im Abendland. Historische Darstellung. Teil 1|year=2000|language=German|location=Frankfurt am Main}}
*{{cite book|last=Sezgin|first=Fuat|title=Geschichte Des Arabischen Schrifttums '''XI''': Mathematische Geographie und Kartographie im Islam und ihr Fortleben im Abendland. Historische Darstellung. Teil 2|year=2000|language=German|location=Frankfurt am Main}}
*{{cite book|last=Sezgin|first=Fuat|title=Geschichte Des Arabischen Schrifttums '''XII''': Mathematische Geographie und Kartographie im Islam und ihr Fortleben im Abendland. Historische Darstellung. Teil 3|year=2000|language=German|location=Frankfurt am Main}}
* {{cite book|last=Suter|first=Heinrich|title=Die Mathematiker und Astronomen der Araber und ihre
Werke|series=Abhandlungen zur Geschichte der Mathematischen Wissenschaften Mit Einschluss Ihrer Anwendungen, X Heft|location=Leipzig|year=1900}}
</div>


==External links== ==External links==
{{Commons category|History of Islamic science}}
*{{cite web|url=http://www.columbia.edu/~gas1/project/visions/case1/sci.1.html|title=Whose Science is Arabic Science in Renaissance Europe?|first=George|last=Saliba|authorlink=George Saliba}}
*Habibi, Golareh. , ''Science Creative Quarterly''. * by ]
*{{cite web |url=http://www.columbia.edu/~gas1/project/visions/case1/sci.1.html |title=Whose Science is Arabic Science in Renaissance Europe? |first=George |last=Saliba |author-link=George Saliba |ref=none}}
*
*Habibi, Golareh. , ''Science Creative Quarterly''.
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Latest revision as of 08:07, 26 August 2024

"Islamic science" redirects here. For the Islamic religious sciences, see Islamic sciences.

The Tusi couple, a mathematical device invented by the Persian polymath Nasir al-Din Tusi to model the not perfectly circular motions of the planets

Science in the medieval Islamic world was the science developed and practised during the Islamic Golden Age under the Abbasid Caliphate of Baghdad, the Umayyads of Córdoba, the Abbadids of Seville, the Samanids, the Ziyarids and the Buyids in Persia and beyond, spanning the period roughly between 786 and 1258. Islamic scientific achievements encompassed a wide range of subject areas, especially astronomy, mathematics, and medicine. Other subjects of scientific inquiry included alchemy and chemistry, botany and agronomy, geography and cartography, ophthalmology, pharmacology, physics, and zoology.

Medieval Islamic science had practical purposes as well as the goal of understanding. For example, astronomy was useful for determining the Qibla, the direction in which to pray, botany had practical application in agriculture, as in the works of Ibn Bassal and Ibn al-'Awwam, and geography enabled Abu Zayd al-Balkhi to make accurate maps. Islamic mathematicians such as Al-Khwarizmi, Avicenna and Jamshīd al-Kāshī made advances in algebra, trigonometry, geometry and Arabic numerals. Islamic doctors described diseases like smallpox and measles, and challenged classical Greek medical theory. Al-Biruni, Avicenna and others described the preparation of hundreds of drugs made from medicinal plants and chemical compounds. Islamic physicists such as Ibn Al-Haytham, Al-Bīrūnī and others studied optics and mechanics as well as astronomy, and criticised Aristotle's view of motion.

During the Middle Ages, Islamic science flourished across a wide area around the Mediterranean Sea and further afield, for several centuries, in a wide range of institutions.

Context and history

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Islamic expansion:   under Muhammad, 622–632   under Rashidun caliphs, 632–661   under Umayyad caliphs, 661–750
Further information: History of Islam

The Islamic era began in 622. Islamic armies eventually conquered Arabia, Egypt and Mesopotamia, and successfully displaced the Persian and Byzantine Empires from the region within a few decades. Within a century, Islam had reached the area of present-day Portugal in the west and Central Asia in the east. The Islamic Golden Age (roughly between 786 and 1258) spanned the period of the Abbasid Caliphate (750–1258), with stable political structures and flourishing trade. Major religious and cultural works of the Islamic empire were translated into Arabic and occasionally Persian. Islamic culture inherited Greek, Indic, Assyrian and Persian influences. A new common civilisation formed, based on Islam. An era of high culture and innovation ensued, with rapid growth in population and cities. The Arab Agricultural Revolution in the countryside brought more crops and improved agricultural technology, especially irrigation. This supported the larger population and enabled culture to flourish. From the 9th century onwards, scholars such as Al-Kindi translated Indian, Assyrian, Sasanian (Persian) and Greek knowledge, including the works of Aristotle, into Arabic. These translations supported advances by scientists across the Islamic world.

The Abbasid Caliphate, 750–1261 (and later in Egypt) at its height, c. 850

Islamic science survived the initial Christian reconquest of Spain, including the fall of Seville in 1248, as work continued in the eastern centres (such as in Persia). After the completion of the Spanish reconquest in 1492, the Islamic world went into an economic and cultural decline. The Abbasid caliphate was followed by the Ottoman Empire (c. 1299–1922), centred in Turkey, and the Safavid Empire (1501–1736), centred in Persia, where work in the arts and sciences continued.

Fields of inquiry

Medieval Islamic scientific achievements encompassed a wide range of subject areas, especially mathematics, astronomy, and medicine. Other subjects of scientific inquiry included physics, alchemy and chemistry, ophthalmology, and geography and cartography.

Alchemy and chemistry

Main article: Alchemy and chemistry in the medieval Islamic world

The early Islamic period saw the establishment of theoretical frameworks in alchemy and chemistry. The sulfur-mercury theory of metals, first found in Sirr al-khalīqa ("The Secret of Creation", c. 750–850, falsely attributed to Apollonius of Tyana), and in the writings attributed to Jabir ibn Hayyan (written c. 850–950), remained the basis of theories of metallic composition until the 18th century. The Emerald Tablet, a cryptic text that all later alchemists up to and including Isaac Newton saw as the foundation of their art, first occurs in the Sirr al-khalīqa and in one of the works attributed to Jabir. In practical chemistry, the works of Jabir, and those of the Persian alchemist and physician Abu Bakr al-Razi (c. 865–925), contain the earliest systematic classifications of chemical substances. Alchemists were also interested in artificially creating such substances. Jabir describes the synthesis of ammonium chloride (sal ammoniac) from organic substances, and Abu Bakr al-Razi experimented with the heating of ammonium chloride, vitriol, and other salts, which would eventually lead to the discovery of the mineral acids by 13th-century Latin alchemists such as pseudo-Geber.

Astronomy and cosmology

al-Biruni's explanation of the phases of the moon
Main articles: Astronomy in the medieval Islamic world and Cosmology in medieval Islam

Astronomy became a major discipline within Islamic science. Astronomers devoted effort both towards understanding the nature of the cosmos and to practical purposes. One application involved determining the Qibla, the direction to face during prayer. Another was astrology, predicting events affecting human life and selecting suitable times for actions such as going to war or founding a city. Al-Battani (850–922) accurately determined the length of the solar year. He contributed to the Tables of Toledo, used by astronomers to predict the movements of the sun, moon and planets across the sky. Copernicus (1473–1543) later used some of Al-Battani's astronomic tables.

Al-Zarqali (1028–1087) developed a more accurate astrolabe, used for centuries afterwards. He constructed a water clock in Toledo, discovered that the Sun's apogee moves slowly relative to the fixed stars, and obtained a good estimate of its motion for its rate of change. Nasir al-Din al-Tusi (1201–1274) wrote an important revision to Ptolemy's 2nd-century celestial model. When Tusi became Helagu's astrologer, he was given an observatory and gained access to Chinese techniques and observations. He developed trigonometry as a separate field, and compiled the most accurate astronomical tables available up to that time.

Botany and agronomy

Further information: Arab Agricultural Revolution
Quince, cypress, and sumac trees, in Zakariya al-Qazwini's 13th century Wonders of Creation

The study of the natural world extended to a detailed examination of plants. The work done proved directly useful in the unprecedented growth of pharmacology across the Islamic world. Al-Dinawari (815–896) popularised botany in the Islamic world with his six-volume Kitab al-Nabat (Book of Plants). Only volumes 3 and 5 have survived, with part of volume 6 reconstructed from quoted passages. The surviving text describes 637 plants in alphabetical order from the letters sin to ya, so the whole book must have covered several thousand kinds of plants. Al-Dinawari described the phases of plant growth and the production of flowers and fruit. The thirteenth century encyclopedia compiled by Zakariya al-Qazwini (1203–1283) – ʿAjā'ib al-makhlūqāt (The Wonders of Creation) – contained, among many other topics, both realistic botany and fantastic accounts. For example, he described trees which grew birds on their twigs in place of leaves, but which could only be found in the far-distant British Isles. The use and cultivation of plants was documented in the 11th century by Muhammad bin Ibrāhīm Ibn Bassāl of Toledo in his book Dīwān al-filāha (The Court of Agriculture), and by Ibn al-'Awwam al-Ishbīlī (also called Abū l-Khayr al-Ishbīlī) of Seville in his 12th century book Kitāb al-Filāha (Treatise on Agriculture). Ibn Bassāl had travelled widely across the Islamic world, returning with a detailed knowledge of agronomy that fed into the Arab Agricultural Revolution. His practical and systematic book describes over 180 plants and how to propagate and care for them. It covered leaf- and root-vegetables, herbs, spices and trees.

Geography and cartography

Surviving fragment of the first World Map of Piri Reis (1513)
Main article: Geography and cartography in medieval Islam

The spread of Islam across Western Asia and North Africa encouraged an unprecedented growth in trade and travel by land and sea as far away as Southeast Asia, China, much of Africa, Scandinavia and even Iceland. Geographers worked to compile increasingly accurate maps of the known world, starting from many existing but fragmentary sources. Abu Zayd al-Balkhi (850–934), founder of the Balkhī school of cartography in Baghdad, wrote an atlas called Figures of the Regions (Suwar al-aqalim). Al-Biruni (973–1048) measured the radius of the earth using a new method. It involved observing the height of a mountain at Nandana (now in Pakistan). Al-Idrisi (1100–1166) drew a map of the world for Roger, the Norman King of Sicily (ruled 1105–1154). He also wrote the Tabula Rogeriana (Book of Roger), a geographic study of the peoples, climates, resources and industries of the whole of the world known at that time. The Ottoman admiral Piri Reis (c. 1470–1553) made a map of the New World and West Africa in 1513. He made use of maps from Greece, Portugal, Muslim sources, and perhaps one made by Christopher Columbus. He represented a part of a major tradition of Ottoman cartography.

Mathematics

A page from al-Khwarizmi's Algebra
Main article: Mathematics in medieval Islam

Islamic mathematicians gathered, organised and clarified the mathematics they inherited from ancient Egypt, Greece, India, Mesopotamia and Persia, and went on to make innovations of their own. Islamic mathematics covered algebra, geometry and arithmetic. Algebra was mainly used for recreation: it had few practical applications at that time. Geometry was studied at different levels. Some texts contain practical geometrical rules for surveying and for measuring figures. Theoretical geometry was a necessary prerequisite for understanding astronomy and optics, and it required years of concentrated work. Early in the Abbasid caliphate (founded 750), soon after the foundation of Baghdad in 762, some mathematical knowledge was assimilated by al-Mansur's group of scientists from the pre-Islamic Persian tradition in astronomy. Astronomers from India were invited to the court of the caliph in the late eighth century; they explained the rudimentary trigonometrical techniques used in Indian astronomy. Ancient Greek works such as Ptolemy's Almagest and Euclid's Elements were translated into Arabic. By the second half of the ninth century, Islamic mathematicians were already making contributions to the most sophisticated parts of Greek geometry. Islamic mathematics reached its apogee in the Eastern part of the Islamic world between the tenth and twelfth centuries. Most medieval Islamic mathematicians wrote in Arabic, others in Persian.

Omar Khayyam's "Cubic equation and intersection of conic sections"

Al-Khwarizmi (8th–9th centuries) was instrumental in the adoption of the Hindu–Arabic numeral system and the development of algebra, introduced methods of simplifying equations, and used Euclidean geometry in his proofs. He was the first to treat algebra as an independent discipline in its own right, and presented the first systematic solution of linear and quadratic equations. Ibn Ishaq al-Kindi (801–873) worked on cryptography for the Abbasid Caliphate, and gave the first known recorded explanation of cryptanalysis and the first description of the method of frequency analysis. Avicenna (c. 980–1037) contributed to mathematical techniques such as casting out nines. Thābit ibn Qurra (835–901) calculated the solution to a chessboard problem involving an exponential series. Al-Farabi (c. 870–950) attempted to describe, geometrically, the repeating patterns popular in Islamic decorative motifs in his book Spiritual Crafts and Natural Secrets in the Details of Geometrical Figures. Omar Khayyam (1048–1131), known in the West as a poet, calculated the length of the year to within 5 decimal places, and found geometric solutions to all 13 forms of cubic equations, developing some quadratic equations still in use. Jamshīd al-Kāshī (c. 1380–1429) is credited with several theorems of trigonometry, including the law of cosines, also known as Al-Kashi's Theorem. He has been credited with the invention of decimal fractions, and with a method like Horner's to calculate roots. He calculated π correctly to 17 significant figures.

Sometime around the seventh century, Islamic scholars adopted the Hindu–Arabic numeral system, describing their use in a standard type of text fī l-ḥisāb al hindī, (On the numbers of the Indians). A distinctive Western Arabic variant of the Eastern Arabic numerals began to emerge around the 10th century in the Maghreb and Al-Andalus (sometimes called ghubar numerals, though the term is not always accepted), which are the direct ancestor of the modern Arabic numerals used throughout the world.

Medicine

A coloured illustration from Mansur's Anatomy, c. 1450
Main article: Medicine in the medieval Islamic world

Islamic society paid careful attention to medicine, following a hadith enjoining the preservation of good health. Its physicians inherited knowledge and traditional medical beliefs from the civilisations of classical Greece, Rome, Syria, Persia and India. These included the writings of Hippocrates such as on the theory of the four humours, and the theories of Galen. al-Razi (c. 865–925) identified smallpox and measles, and recognized fever as a part of the body's defenses. He wrote a 23-volume compendium of Chinese, Indian, Persian, Syriac and Greek medicine. al-Razi questioned the classical Greek medical theory of how the four humours regulate life processes. He challenged Galen's work on several fronts, including the treatment of bloodletting, arguing that it was effective. al-Zahrawi (936–1013) was a surgeon whose most important surviving work is referred to as al-Tasrif (Medical Knowledge). It is a 30-volume set mainly discussing medical symptoms, treatments, and pharmacology. The last volume, on surgery, describes surgical instruments, supplies, and pioneering procedures. Avicenna (c. 980–1037) wrote the major medical textbook, The Canon of Medicine. Ibn al-Nafis (1213–1288) wrote an influential book on medicine; it largely replaced Avicenna's Canon in the Islamic world. He wrote commentaries on Galen and on Avicenna's works. One of these commentaries, discovered in 1924, described the circulation of blood through the lungs.

Optics and ophthalmology

The eye according to Hunayn ibn Ishaq, c. 1200
Main articles: Physics in the medieval Islamic world § Optics, and Ophthalmology in medieval Islam
Ibn al-Haytham (Alhazen), (965–1039 Iraq). A polymath, sometimes considered the father of modern scientific methodology due to his emphasis on experimental data and on the reproducibility of its results.

Optics developed rapidly in this period. By the ninth century, there were works on physiological, geometrical and physical optics. Topics covered included mirror reflection. Hunayn ibn Ishaq (809–873) wrote the book Ten Treatises on the Eye; this remained influential in the West until the 17th century. Abbas ibn Firnas (810–887) developed lenses for magnification and the improvement of vision. Ibn Sahl (c. 940–1000) discovered the law of refraction known as Snell's law. He used the law to produce the first Aspheric lenses that focused light without geometric aberrations.

In the eleventh century Ibn al-Haytham (Alhazen, 965–1040) rejected the Greek ideas about vision, whether the Aristotelian tradition that held that the form of the perceived object entered the eye (but not its matter), or that of Euclid and Ptolemy which held that the eye emitted a ray. Al-Haytham proposed in his Book of Optics that vision occurs by way of light rays forming a cone with its vertex at the center of the eye. He suggested that light was reflected from different surfaces in different directions, thus causing objects to look different. He argued further that the mathematics of reflection and refraction needed to be consistent with the anatomy of the eye. He was also an early proponent of the scientific method, the concept that a hypothesis must be proved by experiments based on confirmable procedures or mathematical evidence, five centuries before Renaissance scientists.

Pharmacology

Ibn Sina teaching the use of drugs. 15th-century Great Canon of Avicenna
Further information: History of pharmacy

Advances in botany and chemistry in the Islamic world encouraged developments in pharmacology. Muhammad ibn Zakarīya Rāzi (Rhazes) (865–915) promoted the medical uses of chemical compounds. Abu al-Qasim al-Zahrawi (Abulcasis) (936–1013) pioneered the preparation of medicines by sublimation and distillation. His Liber servitoris provides instructions for preparing "simples" from which were compounded the complex drugs then used. Sabur Ibn Sahl (died 869) was the first physician to describe a large variety of drugs and remedies for ailments. Al-Muwaffaq, in the 10th century, wrote The foundations of the true properties of Remedies, describing chemicals such as arsenious oxide and silicic acid. He distinguished between sodium carbonate and potassium carbonate, and drew attention to the poisonous nature of copper compounds, especially copper vitriol, and also of lead compounds. Al-Biruni (973–1050) wrote the Kitab al-Saydalah (The Book of Drugs), describing in detail the properties of drugs, the role of pharmacy and the duties of the pharmacist. Ibn Sina (Avicenna) described 700 preparations, their properties, their mode of action and their indications. He devoted a whole volume to simples in The Canon of Medicine. Works by Masawaih al-Mardini (c. 925–1015) and by Ibn al-Wafid (1008–1074) were printed in Latin more than fifty times, appearing as De Medicinis universalibus et particularibus by Mesue the Younger (died 1015) and as the Medicamentis simplicibus by Abenguefit (c. 997 – 1074) respectively. Peter of Abano (1250–1316) translated and added a supplement to the work of al-Mardini under the title De Veneris. Ibn al-Baytar (1197–1248), in his Al-Jami fi al-Tibb, described a thousand simples and drugs based directly on Mediterranean plants collected along the entire coast between Syria and Spain, for the first time exceeding the coverage provided by Dioscorides in classical times. Islamic physicians such as Ibn Sina described clinical trials for determining the efficacy of medical drugs and substances.

Physics

Self trimming lamp in Ahmad ibn Mūsā ibn Shākir's treatise on mechanical devices, c. 850
Main article: Physics in the medieval Islamic world

The fields of physics studied in this period, apart from optics and astronomy which are described separately, are aspects of mechanics: statics, dynamics, kinematics and motion. In the sixth century John Philoponus (c. 490 – c. 570) rejected the Aristotelian view of motion. He argued instead that an object acquires an inclination to move when it has a motive power impressed on it. In the eleventh century Ibn Sina adopted roughly the same idea, namely that a moving object has force which is dissipated by external agents like air resistance. Ibn Sina distinguished between "force" and "inclination" (mayl); he claimed that an object gained mayl when the object is in opposition to its natural motion. He concluded that continuation of motion depends on the inclination that is transferred to the object, and that the object remains in motion until the mayl is spent. He also claimed that a projectile in a vacuum would not stop unless it is acted upon. That view accords with Newton's first law of motion, on inertia. As a non-Aristotelian suggestion, it was essentially abandoned until it was described as "impetus" by Jean Buridan (c. 1295–1363), who was likely influenced by Ibn Sina's Book of Healing.

In the Shadows, Abū Rayḥān al-Bīrūnī (973–1048) describes non-uniform motion as the result of acceleration. Ibn-Sina's theory of mayl tried to relate the velocity and weight of a moving object, a precursor of the concept of momentum. Aristotle's theory of motion stated that a constant force produces a uniform motion; Abu'l-Barakāt al-Baghdādī (c. 1080 – 1164/5) disagreed, arguing that velocity and acceleration are two different things, and that force is proportional to acceleration, not to velocity.

The Banu Musa brothers, Jafar-Muhammad, Ahmad and al-Hasan (c. early 9th century) invented automated devices described in their Book of Ingenious Devices. Advances on the subject were also made by al-Jazari and Ibn Ma'ruf.

Zoology

Page from the Kitāb al-Hayawān (Book of Animals) by Al-Jahiz. Ninth century
Further information: Kitāb al-Hayawān

Many classical works, including those of Aristotle, were transmitted from Greek to Syriac, then to Arabic, then to Latin in the Middle Ages. Aristotle's zoology remained dominant in its field for two thousand years. The Kitāb al-Hayawān (كتاب الحيوان, English: Book of Animals) is a 9th-century Arabic translation of History of Animals: 1–10, On the Parts of Animals: 11–14, and Generation of Animals: 15–19.

The book was mentioned by Al-Kindī (died 850), and commented on by Avicenna (Ibn Sīnā) in his The Book of Healing. Avempace (Ibn Bājja) and Averroes (Ibn Rushd) commented on and criticised On the Parts of Animals and Generation of Animals.

Significance

Further information: Islamic world contributions to Medieval Europe and Latin translations of the 12th century

Muslim scientists helped in laying the foundations for an experimental science with their contributions to the scientific method and their empirical, experimental and quantitative approach to scientific inquiry. In a more general sense, the positive achievement of Islamic science was simply to flourish, for centuries, in a wide range of institutions from observatories to libraries, madrasas to hospitals and courts, both at the height of the Islamic golden age and for some centuries afterwards. It did not lead to a scientific revolution like that in Early modern Europe, but such external comparisons are probably to be rejected as imposing "chronologically and culturally alien standards" on a successful medieval culture.

See also

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Notes

  1. Lindberg & Shank 2013, chapters 1–5 cover science, mathematics and medicine in Islam.

Sources

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