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Old 04-05-2012, 07:44 PM   #74
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Lightbulb Pole and polar

Originally Posted by dreampower View Post
The interaction of/and motion between polarities.
Speaking of polarities...

In geometry, the terms pole and polar are used to describe a point and a line that have a unique reciprocal relationship with respect to a given conic section. If the point lies on the conic section, its polar is the tangent line to the conic section at that point.

For a given circle, the operation of reciprocation in a circle corresponds to transforming each point in the plane into its polar line and each line in the plane into its pole.

Last edited by lightgiver; 04-05-2012 at 07:48 PM.
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