Roulette (curve) in this case, the point lies on the circle then the roulette is a cycloid. A related concept is a glissette, the curve described by a point attached to a given curve as it slides along two (or more) given curves. Formally speaking, the curves must be differentiable curves in the Euclidean plane. The "fixed curve" is kept invariant; the "rolling curve" is subjected to a continuous congruence transformation such that at all times the curves are tangent at a point of contact that moves with the same speed when taken along either curve (another way to express this constraint
The Wheel of Time October 2018. Many fans of "The Wheel of Time" attend Dragon Con, which had an exclusive "Wheel of Time" content track from 2001 through 2012. "The Wheel of Time" now has its own annual convention, JordanCon, which has been held annually in Atlanta, Georgia, since 2009. The Wheel of Time The Wheel of Time is a series of high fantasy novels written by American author James Oliver Rigney Jr., under his pen name of Robert Jordan. Originally planned as a six-book series, "The Wheel of Time" spanned fourteen volumes, in addition to a prequel novel and two companion books. Jordan