4492 Debussy the most prominent figures associated with impressionist music, best known for his "Clair de lune" and "Feux d'artifice", as well as for his piano suites "Estampes" (1903), "Bergamasque" (1890–1905) and Images (1905). He was a fervent admirer of Frédéric Chopin, after whom the asteroid was named. The official naming citation was published on 4 October 1990 (). 4492 Debussy 4492 Debussy, provisional designation "", is a dark and elongated background asteroid and binary system from the intermediate asteroid belt, approximately in diameter. It was discovered on 17 September 1988, by Belgian astronomer Eric Elst at Haute-Provence Observatory in France. It
Lune of Hippocrates Lune of Hippocrates In geometry, the lune of Hippocrates, named after Hippocrates of Chios, is a lune bounded by arcs of two circles, the smaller of which has as its diameter a chord spanning a right angle on the larger circle. Equivalently, it is a non-convex plane region bounded by one 180-degree circular arc and one 90-degree circular arc. It is the first curved figure to have its exact area calculated mathematically. Hippocrates wanted to solve the classic problem of squaring the circle, i.e. constructing a square by means of straightedge and compass, having the same area as a given