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
Who breaks a butterfly upon a wheel? version of the quotation as the heading (set in capital letters) for an editorial on 1 July 1967 about the "Redlands" court case, which had resulted in prison sentences for Rolling Stones members Keith Richards and Mick Jagger. The philosopher Mary Midgley used a variation on the phrase in an article in the journal "Philosophy" written to counter a review praising "The Selfish Gene" by Richard Dawkins, where she cuttingly said that she had "not attended to Dawkins, thinking it unnecessary to break a butterfly upon a wheel." The British rock band, The Mission, enjoyed a no. 12 hit in