The New Encyclopędia BritannicaEncyclopędia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 21
... frequency . The frequency is defined as the number of times per second the disturbance at any point in the medium transmitting the wave is repeated . The relation between pitch , as perceived by the human ear , and physical frequency is ...
... frequency . The frequency is defined as the number of times per second the disturbance at any point in the medium transmitting the wave is repeated . The relation between pitch , as perceived by the human ear , and physical frequency is ...
Page 30
... frequency of the oscillatory field . It will , of course , vibrate with maxi- mum intensity and radiate correspondingly if this fre- quency matches one of its own natural frequencies of vibration . The various resonance frequencies are ...
... frequency of the oscillatory field . It will , of course , vibrate with maxi- mum intensity and radiate correspondingly if this fre- quency matches one of its own natural frequencies of vibration . The various resonance frequencies are ...
Page 475
... frequency of the transition . Thus radio - frequency and microwave transitions occur spontaneously much less rapidly than do transitions at visible and ultraviolet frequencies . Because of this , most radio - frequency and microwave ...
... frequency of the transition . Thus radio - frequency and microwave transitions occur spontaneously much less rapidly than do transitions at visible and ultraviolet frequencies . Because of this , most radio - frequency and microwave ...
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