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more about geocentric
geocentric |
4 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Geocentric \Ge`o*cen"tric\, Geocentrical \Ge`o*cen"tric*al\, a. ] Having considering, or based on the earth as center; as the geocentric theory of the universe. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Parallax \Par"al*lax\, n. [Gr. ? alternation, the mutual inclination of two lines forming an angle, fr ? to change a little, go aside, deviate; ? beside, beyond + ? to change: cf F. parallaxe. Cf {Parallel}.] 1. The apparent displacement, or difference of position, of an object, as seen from two different stations, or points of view. 2. (Astron.) The apparent difference in position of a body (as the sun, or a star) as seen from some point on the earth's surface, and as seen from some other conventional point, as the earth's center or the sun. {Annual parallax}, the greatest value of the heliocentric parallax, or the greatest annual apparent change of place of a body as seen from the earth and sun; as the annual parallax of a fixed star. {Binocular parallax}, the apparent difference in position of an object as seen separately by one eye, and then by the other the head remaining unmoved. {Diurnal}, or {Geocentric}, {parallax}, the parallax of a body with reference to the earth's center. This is the kind of parallax that is generally understood when the term is used without qualification. {Heliocentric parallax}, the parallax of a body with reference to the sun, or the angle subtended at the body by lines drawn from it to the earth and sun; as the heliocentric parallax of a planet. {Horizontal parallax}, the geocentric parallx of a heavenly body when in the horizon, or the angle subtended at the body by the earth's radius. {Optical parallax}, the apparent displacement in position undergone by an object when viewed by either eye singly. --Brande & C. {Parallax of the cross wires} (of an optical instrument), their apparent displacement when the eye changes its position, caused by their not being exactly in the focus of the object glass. {Stellar parallax}, the annual parallax of a fixed star. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Geocentric \Ge`o*cen"tric\, Geocentrical \Ge`o*cen"tric*al\, a. [Gr. ge`a, gh^, the earth + ke`ntron center: cf F. g['e]ocentrique.] (Astron.) a Having reference to the earth as center; in relation to or seen from the earth, -- usually opposed to heliocentric, as seen from the sun; as the geocentric longitude or latitude of a planet. b Having reference to the center of the earth. {Geocentric latitude} (of place) the angle included between the radius of the earth through the place and the plane of the equator, in distinction from geographic latitude. It is a little less than the geographic latitude. From WordNet r 1.6 [wn]: geocentric adj : having the earth as the center [ant: {heliocentric}]
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