Mach

  1. Proper noun.  Ernst Mach, Austrian physicist 1838 - 1916.
  2. Noun.  (physics) a ratio of the speed (of an object, etc.) to the speed of sound in the fluid or other medium through which the object travels. Usually used to describe supersonic speeds.
  3. Noun.  (physics) the Mach number.

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This entry was last updated on RefTopia from its source on 3/20/2012.