| Revision as of 19:38, 4 June 2003 editLooxix~enwiki (talk | contribs)6,016 editsm interlanguage links← Previous edit | Revision as of 09:28, 19 June 2003 edit undo217.158.203.146 (talk) ...sometimes thought to be a sign of genius. However, many eccentrics are cranks, rather than geniuses.Next edit → | ||
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| In popular usage, '''eccentricity''' refers to unusual or odd ] on the part of a person, as opposed to being ]. Eccentric behavior is often considered whimsical or quirky, although it can also be strange and disturbing. American millionaire ], for example was considered to be very eccentric, and stored his ] in glass jars and never cut his hair or nails. Other people may have eccentric taste in ], or have eccentric ] or collections. | In popular usage, '''eccentricity''' refers to unusual or odd ] on the part of a person, as opposed to being ]. Eccentric behavior is often considered whimsical or quirky, although it can also be strange and disturbing. American millionaire ], for example was considered to be very eccentric, and stored his ] in glass jars and never cut his hair or nails. Other people may have eccentric taste in ], or have eccentric ] or collections. | ||
| Many of history's most brilliant minds have displayed many unusual behaviors and habits, and eccentricity is sometimes thought to be a sign of ]. However, many eccentrics are ], rather than geniuses. | |||
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Revision as of 09:28, 19 June 2003
In mathematics, eccentricity is a parameter associated with every conic section. It can be thought of as a measure of how much the conic section deviates from being circular. In particular:
- The eccentricity of a circle is zero.
- The eccentricity of an ellipse is greater than zero and smaller than 1
- The eccentricity of a parabola is 1.
- The eccentricity of a hyperbola is greater than 1.
- The eccentricity of a straight line is infinity.
To calculate the eccentricity of any ellipse, measure the semi-major axis and call it a. Measure the semi-minor axis and call that measurement b. Now:
- eccentricity = e = √( 1 - b/a)
where √ is the square root sign. In astronomy, the eccentricity of an orbit can be calculated using this formula. For example, the eccentricity of the Earth's orbit is 0.0167.
In popular usage, eccentricity refers to unusual or odd behavior on the part of a person, as opposed to being normal. Eccentric behavior is often considered whimsical or quirky, although it can also be strange and disturbing. American millionaire Howard Hughes, for example was considered to be very eccentric, and stored his urine in glass jars and never cut his hair or nails. Other people may have eccentric taste in clothes, or have eccentric hobbies or collections.
Many of history's most brilliant minds have displayed many unusual behaviors and habits, and eccentricity is sometimes thought to be a sign of genius. However, many eccentrics are cranks, rather than geniuses.