Roulette (curve) application of this is that a square wheel could roll without bouncing on a road that is a matched series of catenary arcs. Roulette (curve) In the differential geometry of curves, a roulette is a kind of curve, generalizing cycloids, epicycloids, hypocycloids, trochoids, and involutes. Roughly speaking, a roulette is the curve described by a point (called the "generator" or "pole") attached to a given curve as that curve rolls without slipping, along a second given curve that is fixed. More precisely, given a curve attached to a plane which is moving so that the curve rolls, without slipping, along
Order of the Wheel of the Thunder Dragon Order of the Wheel of the Thunder Dragon The Order of Wheel of the Thunder Dragon (Dzongkha : "Druk Khorlo") is a Single Class Order ranking fourth in the Order of Precedence. It was instituted by King Jigme Dorji Wangchuck on 9 February 1967 an reorganized by King Jigme Khesar Namgyal Wangchuck in January 2008 and consists of a neck Badge and a matching miniature. The 65 mm badge, comprises a back plate of dorjee the point of which form an outer circle, within which a black enamelled circle encloses the King's portrait in gold, on a background of enameled