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Mach number

World Encyclopedia | 2005 | Copyright

Mach number Ratio of the speed of a body or fluid to the local speed of sound. Mach 1 refers to the local speed. An aircraft flying below Mach 1 is said to be subsonic. supersonic flight means flying at speeds above Mach 1. Mach numbers are named after the Austrian physicist Ernst Mach (1838–1916).

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"Mach number." World Encyclopedia. 2005. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

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Mach number

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

Mach number [for E. Mach ], ratio between the speed of an object and the speed of sound in the medium in which the object is traveling. An airplane that has the velocity of Mach 3.0 is traveling at three times the speed of sound as measured in the prevailing atmospheric conditions.

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"Mach number." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

"Mach number." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1E1-Machnumb.html

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mach number

The Oxford Essential Dictionary of the U.S. Military | 2001 | Copyright

mach number ˈmäk ˈnəmbər the ratio of the velocity of a body to that of sound in the surrounding medium.

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"mach number." The Oxford Essential Dictionary of the U.S. Military. 2001. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

"mach number." The Oxford Essential Dictionary of the U.S. Military. 2001. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O63-machnumber.html

"mach number." The Oxford Essential Dictionary of the U.S. Military. 2001. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O63-machnumber.html

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Mach number

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

Mach num·ber • n. see Mach².

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"Mach number." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

"Mach number." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O999-machnumber.html

"Mach number." The Oxford Pocket Dictionary of Current English. 2009. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-machnumber.html

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Free newspaper and magazine articles

	Mach 1 D/A Converter. Magazine article from: Sensible Sound; 6/1/2000
	Mustang's Mach 1 is constant.(AUTO WEEKEND) Newspaper article from: The Washington Times (Washington, DC); 8/8/2003
	The Falcom Mach V PC soars over the gaming crowd. (Hardware Review)(Evaluation) Magazine article from: Computer Shopper; 10/1/1997