Pole And Polar
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, reciprocation in a circle means to transform each point in the plane into its polar line and each line in the plane into its pole.
Read more about Pole And Polar: Special Case of Circles, Reciprocation and Projective Duality, General Conic Sections, Properties, Applications, See Also, Bibliography
Famous quotes containing the words pole and, pole and/or polar:
“Midwinter spring is its own season
Sempiternal though sodden towards sundown,
Suspended in time, between pole and tropic.”
—T.S. (Thomas Stearns)
“I wouldn’t take the Pope too seriously. He’s a Pole first, a pope second, and maybe a Christian third.”
—Muriel Spark (b. 1918)
“Professor Fate: My apologies. There’s a polar bear in our car.”
—Arthur Ross. Professor Fate (Jack Lemmon)