Mach number

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Related to Mach 2: Concorde

Mach num·ber

(mahk),
a number representing the ratio between the speed of an object moving through a fluid medium, such as air, and the speed of sound in the same medium.

Mach,

Ernst Waldfried Josef Wenzel, Austrian scientist, 1838-1916.
Mach band - a relatively bright or dark band.
Mach number - the ratio between the speed of an object moving through a fluid medium and the speed of sound in the same medium.
References in periodicals archive ?
17 Mach 2 is a fine 100-yard small game cartridge, but don't push it much further.
None of us blue suiters was thrilled to see a NACA guy bust Mach 2.
By comparison, DARPA said, the Concorde weighs 400,000 pounds, cruises at Mach 2, and has an unrefueled range of 3,550 miles.
Rail-launched from Navy test and training ranges, the highly maneuverable GQM-163A Coyote achieves cruise speeds of up to Mach 2.
4 update is a complete development system for the PC that supports MACH 1, MACH 2, MACH 4 and MACH 5 families, in addition to the company's PAL devices.