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beat |
Also found in: Dictionary/thesaurus, Medical, Idioms, Wikipedia, Hutchinson | 0.06 sec. |
beatIn physics, the pulsation resulting from a combination of two waves of slightly different frequency. Beat frequency is the difference between the frequencies of the combining waves. When the interfering frequencies are in the audible range, the beats are heard as alternating soft and loud pulses. The human ear can detect beats with frequencies up to 10 hertz, or 10 beats per second. Piano tuners listen for beats when comparing the pitch of a tuning fork to that of a vibrating string; when no beats are heard, the fork and string are at the same frequency. Ultrasonic or inaudible frequencies can be superimposed to produce audible beats, allowing the detection of vocal sounds produced by bats or dolphins. |
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| As such, many travelers pass it by - they're either eager to get to town or, late in the day, are beating a hasty retreat to the resort areas of western Maui. Conversely, I was nearly mown down by a three-generation family group beating a hasty retreat from what at first looks like a large, tacky dolls' house on a heap of tarmac. Boykin, in a belated attempt to prove that aside from being a Bible-thumping, holier-than-thou fundamentalist zealot, he is also well-versed in the tactics of strategic warfare by beating a hasty retreat from his inflammatory Muslim remarks. |
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beating a hasty retreat
