Relation of Velocity, Number of Vibrations, and Wave Length
المؤلف:
GEORGE A. HOADLEY
المصدر:
ESSENTIALS OF PHYSICS
الجزء والصفحة:
p-204
2025-11-13
87
When a body is sounding continuously, the air between it and a person who hears it is filled with a continuous series of waves.
The condensations are a wave length apart, consequently the wave length may be defined as the distance the sound travels while the vibrating body is making one complete vibration. The number of these waves that strike the ear each second will depend upon the rate of vibration of the sounding body, and the velocity of sound in the air will be the product of the wave length by the number of vibrations per second. That is,
For example, if the wave length is 4 ft. and the vibrating body sends out 280 waves per second, then the front of the first wave will be 1120 ft. away from the sounding body when the 280th vibration is finished.
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