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Eccentricity is a measure of how much an ellipse deviates from a circle. In ], eccentricity is a measure of how much an ellipse deviates from a circle.
To calculate the eccentricity of any ellipse, measure the semi-major axis 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 and call it " a " . Measure the semi-minor axis and call that measurement
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The eccentricity is given the symbol, " e " . The eccentricity is given the symbol, " e " .


The eccentricity of any ellipse is greater than zero, but smaller The eccentricity of any ellipse is greater than zero, but smaller than 1.0
than 1.0


The eccentricity of a circle is zero. The eccentricity of a circle is zero.



In ], eccentricity refers to the deviation of an object's orbital motion from a circular orbit, according to the mathematical formula given above.


In popular useage, eccentricity refers to unusual or odd behavior on the part of an indididual.

Revision as of 16:20, 19 February 2002

In mathematics, eccentricity is a measure of how much an ellipse deviates from a circle. 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 calculate:

                         SquareRoot( (a^2 - b^2)/a^2  )

The eccentricity is given the symbol, " e " .

The eccentricity of any ellipse is greater than zero, but smaller than 1.0

The eccentricity of a circle is zero.


In astronomy, eccentricity refers to the deviation of an object's orbital motion from a circular orbit, according to the mathematical formula given above.


In popular useage, eccentricity refers to unusual or odd behavior on the part of an indididual.