beat

beat
i. A low-frequency vibration produced when two sources of vibration act on the same object at the same time. For example, in a multiengine airplane, if two engines have slightly different RPM, airframe vibrations produced by these engines will produce a very noticeable beat.
ii. When two waves are combined or superimposed, a beat occurs if two frequencies are not the same. Waves beat together to create the appearance of either a change in amplitude, if the frequencies differ by a few hertz (Hz), or new frequencies, called beat frequencies or heterodynes, if the original frequencies are far apart.

Aviation dictionary. 2014.

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  • Beat — (b[=e]t), v. t. [imp. {Beat}; p. p. {Beat}, {Beaten}; p. pr. & vb. n. {Beating}.] [OE. beaten, beten, AS. be[ a]tan; akin to Icel. bauta, OHG. b[=o]zan. Cf. 1st {Butt}, {Button}.] 1. To strike repeatedly; to lay repeated blows upon; as, to beat… …   The Collaborative International Dictionary of English

  • Beat — (b[=e]t), v. t. [imp. {Beat}; p. p. {Beat}, {Beaten}; p. pr. & vb. n. {Beating}.] [OE. beaten, beten, AS. be[ a]tan; akin to Icel. bauta, OHG. b[=o]zan. Cf. 1st {Butt}, {Button}.] 1. To strike repeatedly; to lay repeated blows upon; as, to beat… …   The Collaborative International Dictionary of English

  • Beat — (b[=e]t), v. t. [imp. {Beat}; p. p. {Beat}, {Beaten}; p. pr. & vb. n. {Beating}.] [OE. beaten, beten, AS. be[ a]tan; akin to Icel. bauta, OHG. b[=o]zan. Cf. 1st {Butt}, {Button}.] 1. To strike repeatedly; to lay repeated blows upon; as, to beat… …   The Collaborative International Dictionary of English

  • Beat It — Michael Jackson Veröffentlichung 26. Februar 1983 Länge 4:17 Genre(s) Pop Autor(en) Michael Jackson …   Deutsch Wikipedia

  • Beat'em up — Beat them all Le beat them all (ou beat em all, de l anglais « battez les tous », aussi appelé parfois scrolling fighter) est un type de jeu vidéo opposant un ou deux joueurs à un nombre important d ennemis. Le principe du jeu est d… …   Wikipédia en Français

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  • beat — [bēt] vt. beat, beaten, beating [ME beten < OE beatan < IE * bhaut < base * bhau , * bhū , to strike, beat > BEETLE2, BUTT1 & BUTT2, L fustis, a club] 1. to …   English World dictionary

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