Earth-pitch
71Theremin — The theremin is one of the earliest electronic musical instruments, and the first musical instrument played without being touched (originally pronounced|ˈteremin but often anglicized as IPAEng|ˈθɛrəmɪn [ [http://www.thereminworld.com/faq.asp… …
72List of unusual units of measurement — For units of measure primarily used in countries where English is not the main language, see the article specific to that country, a list of which can be found in the systems of measurement article. An unusual unit of measurement is a unit of… …
73Gravity turn — A gravity turn or zero lift turn is a maneuver (see trajectory optimization) used in launching a spacecraft into, or descending from, an orbit around a celestial body such as a planet or a moon. This launch trajectory offers two main advantages… …
74electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …
75galaxy — /gal euhk see/, n., pl. galaxies. 1. Astron. a. a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. b. (usually cap.) See Milky Way. 2. any large and brilliant or impressive… …
76sound — sound1 soundable, adj. /sownd/, n. 1. the sensation produced by stimulation of the organs of hearing by vibrations transmitted through the air or other medium. 2. mechanical vibrations transmitted through an elastic medium, traveling in air at a… …
77Sound — /sownd/, n. The, a strait between SW Sweden and Zealand, connecting the Kattegat and the Baltic. 87 mi. (140 km) long; 3 30 mi. (5 48 km) wide. Swedish and Danish, Oresund. * * * I Mechanical disturbance that propagates as a longitudinal wave… …
78Mercury-Redstone 3 — Mission insignia Mission statistics Mission name Mercury Redstone 3 Spacecraft name Freedom 7 Spacecraft mass …
79Superboy (Kal-El) — This article is about the original, pre Crisis Superboy. For similarly named DC Comics characters, see Superboy.Superherobox| caption=Cover of The New Adventures of Superboy #1 (Jan. 1980). Superboy and his supporting cast: Chief Parker, Lana… …
80literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …
