flattening


flattening
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 it equals the ellipticity of the ellipse forming a meridianal section of the spheroid. If a and b represent the major and minor semi-axes of the spheroid, respectively, and f is the flattening of the earth, f = (a − b)/a. The magnitude of the flattening is sometimes expressed by stating the numerical value of the reciprocal of the flattening, a/(a − b).

Aviation dictionary. 2014.

Look at other dictionaries:

  • Flattening — Flattening. См. Правка. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Flattening — 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… …   Wikipedia

  • Flattening — Flatten Flat ten (fl[a^]t t n), v. t. [imp. & p. p. {Flattened}; p. pr. & vb. n. {Flattening}.] [From {Flat}, a.] 1. To reduce to an even surface or one approaching evenness; to make flat; to level; to make plane. [1913 Webster] 2. To throw down; …   The Collaborative International Dictionary of English

  • flattening — 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 …   Wiktionary

  • Flattening — Рихтовка (стереотипа); Потеря контраста; Смягчение (изображения) …   Краткий толковый словарь по полиграфии

  • flattening — flat·ten·ing (flatґə ning) making flat; diminishing …   Medical dictionary

  • flattening — Смотри Плющение …   Энциклопедический словарь по металлургии

  • flattening — n. act of leveling, straightening, making flat flat·ten || flætn v. make level or smooth; become level; make flat; beat flat; knock down; make insipid or dull …   English contemporary dictionary

  • flattening — …   Useful english dictionary

  • Flattening dies — Flattening dies. См. Правильные штампы. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов