flattening of the earth
1Figure of the Earth — An oblate spheroid Geodesy …
2flattening — The ratio of the difference between the equatorial radius (major semi axis) and the polar radius (minor semi axis) of the earth to the equatorial radius. Also called compression. The flattening of the earth is the ellipticity of the spheroid, and …
3Historical determinations of the Earth's radius and flattening — ▪ Table Historical determinations of the Earth s radius and flattening author year method equatorial radius (in metres) l/f* P. Bouguer and P. L. M. de Maupertuis 1735–43 arc 6,397,300 216.80 G.B. Airy 1830 arc 6,376,542 299.30 A.R. Clarke 1866… …
4Earth radius — The Earth s shape, like that of all major planets, approximates a sphere. A true sphere has a unique radius, but on Earth the distance from the mean sea level at each point on the surface to the center (the radius of the Earth at a point on the… …
5Flattening — Ellipticity redirects here. For ellipticity in differential calculus, see elliptic operator. This article is about geometry. For psychopathology, see flattening of affect. The flattening, ellipticity, or oblateness of an oblate spheroid is a… …
6Earth — This article is about the planet. For other uses, see Earth (disambiguation). Earth   …
7flattening — noun a) The act, or the result of making something flat of flatter The Earth is a sphere that has flattenings at the poles. b) A flattened part of something …
8Antiquity of the World — Antiquity of the World † Catholic Encyclopedia ► Antiquity of the World Various attempts have been made to establish the age of the world. Two groups of scientists have especially busied themselves with this question: physicists and… …
9Spherical Earth — Medieval artistic representation of a spherical Earth with compartments representing earth, air, and water (c. 1400). The concept of a spherical Earth dates back to ancient Greek philosophy from around the 6th century BC …
10Islamic view of the Last Judgment — This article is part of the series …
