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frequency, in physics, the number of waves that pass a fixed point in unit time; also, the number of cycles or vibrations undergone during one unit of time by a body in periodic motion. A body in periodic motion is said to have undergone one cycle or one vibration after passing through a series of events or positions and returning to its ...

LIGHT/SOUND/RADIO. [ U ] physics specialized. the number of times that a wave, especially a light, sound, or radio wave, is produced within a particular period, especially one second. frecuencia. the frequency of light. low frequency radiation. The human ear cannot hear very high-frequency sounds.

Frequency—number of waves passing by a specific point per second; Period—time it takes for one wave cycle to complete; In addition to amplitude, frequency, and period, their wavelength and wave velocity also characterize waves. The wavelength λ λ is the distance between adjacent identical parts of a wave, parallel to the direction of ...

Humans perceive the frequency of a sound as its pitch. Each musical note corresponds to a particular frequency. An infant's ear is able to perceive frequencies ranging from 20 Hz to 20 000 Hz; the average adult human can hear sounds between 20 Hz and 16 000 Hz.

frequency noun (LIGHT/SOUND/RADIO) [ U ] physics specialized. the number of times that a wave, especially a light, sound, or radio wave, is produced within a particular period, especially one second: the frequency of light. low frequency radiation.