Daily Almanac for
May 27, 2012
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spi'ral of Archime'des



Geom.
a curve that is the locus of a point that moves outward with uniform speed along a vector, beginning at the origin, while the vector rotates about the origin with uniform angular velocity. Equation (in polar coordinates): r = a θ.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

spiral nebulaspiral spring
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