(after Ernst Mach)

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• Ernst Mach — Infobox Philosopher region = Western Philosophy era = 20th century philosophy color = lightsteelblue image size = 200px image caption = Ernst Mach name = Ernst Mach birth = February 18, 1838 Brno, Austrian Empire death = Death date and… …   Wikipedia

• mach number — mach. Also, Mach number. [1935 40] * * * ▪ physics       in fluid mechanics, ratio of the velocity of a fluid to the velocity of sound in that fluid, named after Ernst Mach (Mach, Ernst) (1838–1916), an Austrian physicist and philosopher. In the… …   Universalium

• Mach bands — are an optical illusion consisting of an image of two wide bands, one light and one dark, separated by a narrow strip with a light to dark gradient. The human eye perceives two narrow bands of different brightnesses either side of the gradient… …   Wikipedia

• mach numbers — mach 1, et cetera ratio of velocity of an object to the velocity of sound (named after Ernst Mach, Austrian physicist) …   Eponyms, nicknames, and geographical games

• Mach — Refers to a Mach number, or the ratio of the speed of an airplane to the speed of sound in the same atmospheric conditions. It is also used as a speed unit. The speed of sound, or Mach 1, is equal to 340.5 m/s, 661 knots, 761 miles per hour, or… …   Aviation dictionary

• mach — /mæk / (say mak), /mak/ (say mahk) noun the ratio of the speed of an object to the speed of sound in the medium, usually air; mach 1 in air is about 340 metres per second at sea level. See mach number. Also, Mach. {named after Ernst Mach,… …  

• Mach number —  (Cap. M.) The ratio of the speed of an object to the speed of sound in the medium (usually air) through which the object is traveling: e.g., an aircraft traveling at twice the speed of sound is said to be going at Mach 2. Named after Ernst Mach… …   Bryson’s dictionary for writers and editors

• mach angle — ˈmäk , ˈmȧk noun Usage: usually capitalized M Etymology: after Ernst Mach died 1916 Austrian physicist and philosopher : half of the vertex angle of a Mach cone whose sine is the ratio of the speed of sound to the speed of a moving body …   Useful english dictionary

• mach cone — noun Usage: usually capitalized M Etymology: after Ernst Mach : the conical pressure wave front produced by a body moving at a speed greater than that of sound …   Useful english dictionary

• mach wave — noun Usage: usually capitalized M Etymology: after Ernst Mach died 1916 Austrian physicist and philosopher : the envelope of wave fronts propagated from an infinitesimal disturbance in a supersonic flow field …   Useful english dictionary

• Mach number — (mathrm{Ma} or M) (generally pronEng|ˈmɑːk, sometimes IPA|/ˈmɑːx/ or IPA|/ˈmæk/) is the speed of an object moving through air, or any fluid substance, divided by the speed of sound as it is in that substance. It is commonly used to represent an… …   Wikipedia