A speed measurement. 1 Mach = the speed of sound. Approximately 1100 feet per second at sea level.
A relative number named after Austrian physicist Ernst Mach (1838–1916) and indicating speed with respect to that of sound in a given medium; in dry air at 32 degrees Fahrenheit and at sea level, for example, Mach 1=approximately 741 miles per hour (1,192 kilometers per hour)
Austrian physicist and philosopher who introduced the Mach number and who founded logical positivism (1838-1916)
the speed of sound defined.
speed of sound. One Mach=1,116 feet per second at sea level
Control in Centrifuze that controls the maximum allowed change in delay per unit time, expressed in seconds of delay / seconds of real time (i.e., unitless); the word "Mach" is derived from aerospace terminology that describes speed in terms of the speed of sound
Is the speed of sound (at ground level approx 670 mph/ 1,072km/h)
Mach number is a relative figure concerning the speed of a body relative to the speed of sound. A Machmeter functions much like an ASI, with altitude and temperature being taken into account because the speed of sound varies as air density and temperature change. Under standard barometric conditions Mach 1.0 at sea level is 761mph yet at 50,000ft where the air is considerably thinner and extremely cold, Mach 1.0 is reached at an indicated 286mph.
Speed of sound at sea level (760 ft/s) that is measured in multiples (Mach 1, Mach 2, etc).