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
What a Beautiful Name on the chart. What a Beautiful Name also leads the CCLI, the international licensing service for 250,000 churches. The YouTube video has more than 220 million views as of 23 April 2018. "What a Beautiful Name" is a track from Hillsong Worship's 25th live album, "Let There Be Light". The album was released on 14 October 2016, and debuted as No. 1 on the Top Christian Albums chart. For 2017, "Let There be Light" was ranked the No. 9 of the year. Hillsong Worship was named Billboard's Top Christian Artist of 2017, as well as Top Christian Duo/Group. "What a