Orbit of the Moon — Not to be confused with Lunar orbit in the sense of a selenocentric orbit, that is, an orbit around the Moon The Moon completes its orbit around the Earth in approximately 27.3 days (a sidereal month). The Earth and Moon orbit about their… … Wikipedia
Quadrature — Quad ra*ture, n. [L. quadratura: cf. F. quadrature. See {Quadrate}, a.] 1. (Math.) The act of squaring; the finding of a square having the same area as some given curvilinear figure; as, the quadrature of a circle; the operation of finding an… … The Collaborative International Dictionary of English
Quadrature of an orbit — Quadrature Quad ra*ture, n. [L. quadratura: cf. F. quadrature. See {Quadrate}, a.] 1. (Math.) The act of squaring; the finding of a square having the same area as some given curvilinear figure; as, the quadrature of a circle; the operation of… … The Collaborative International Dictionary of English
Quadrature — Quadrature, derived from Latin quadrare , may refer to:In signal processing: *Quadrature amplitude modulation (QAM), a modulation method of using both a carrier wave and a quadrature carrier wave that is 90° out of phase with the main carrier… … Wikipedia
quadrature — [kwä′drə chər] n. [LL quadratura < L quadratus: see QUADRATE] 1. the act of squaring 2. the construction of a square equal in area to a given surface [the quadrature of a circle] 3. Astron. a configuration of a superior planet or the moon in… … English World dictionary
quadrature — /kwod reuh cheuhr, choor /, n. 1. the act of squaring. 2. Math. a. the act or process of finding a square equal in area to a given surface, esp. a surface bounded by a curve. b. the act or process of finding an area or calculating an integral,… … Universalium
moon — /mun / (say moohn) noun 1. (often upper case) the body which revolves around the earth monthly at a mean distance of 384 403 km, accompanying the earth in its annual revolution about the sun. It is 3476 km in diameter, and its mass is 0.0123 that …
quadrature — noun a) the process of making something square; squaring When the Moon is in quadrature, it appears in the sky as a half moon. b) [ … Wiktionary
quadrature — /ˈkwɒdrətʃə / (say kwodruhchuh) noun 1. the act of squaring. 2. the act or process of finding a square equal in area to a given surface, especially a surface bounded by a curve. 3. Astronomy a. the situation of two heavenly bodies when their… …
quadrature — n. 1 Math. the process of constructing a square with an area equal to that of a figure bounded by a curve, e.g. a circle. 2 Astron. a each of two points at which the moon is 90° from the sun as viewed from earth. b the position of a heavenly body … Useful english dictionary
