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 was seemingly dropped around 2014. In 1999, "A Soundtrack for the Wheel of Time" was released, featuring music by Robert Berry and inspired by the books. The German power metal band Blind Guardian have written two songs dedicated to the "Wheel of Time" series as part of their 2010 album "At the Edge of Time": "Ride into Obsession" and "Wheel of Time". Swedish heavy metal band Katana also wrote a song, entitled "The Wisdom of Emond's Field", on their 2012 album "Storms of War". The American power metal band Noble Beast, on their 2014 album of the same name, wrote