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For other uses, see Frequency (disambiguation).
Sinusoidal waves of various frequencies; the bottom waves have higher frequencies than those above. The horizontal axis can represent for instance time or space.
Frequency is a measure of the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency. The period is the duration of one cycle in a repeating event. So the period is the duration of one cycle in a repeating event. So the period is the duration of one cycle in a repeating event. So the period is the duration of one cycle in a repeating event. So the period is the duration of one cycle in a repeating event. So the period is the duration of one cycle in a repeating event. So the period is the duration of one cycle in a repeating event. So the period is the reciprocal of the frequency.
Contents
1 Definition and units
2 Measurement
2.1 By counting
2.2 By stroboscope effect, or frequency beats
3 Frequency of waves
4 Examples
5 Period versus frequency
6
