Frequency is the number of cycles in a given time period. Most often, frequency is measured in Hertz (Hz). 1Hz = 1 cycle per second.
Usually frequency is measured in the hertz unit. The hertz measurement, abbreviated Hz, is the number of waves that pass by per second. For example, an “A” note on a violin string vibrates at about 440 Hz (440 vibrations per second).
Frequency and wavelength are inversely related. As wavelength increases, the frequency decreases.
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