Frequency is measured in hertz (Hz), which is the international unit representing the number of occurrences of a repeating event per second. One hertz equals one cycle per second
. In more detail:
- Frequency (symbol fff) is defined as the number of cycles or repetitions of a periodic event occurring in one second
- The reciprocal of frequency is the period TTT, which is the time taken to complete one cycle: f=1Tf=\frac{1}{T}f=T1
- Hertz was named after Heinrich Hertz and officially replaced the older term "cycles per second" in 1960
- Frequency measurement can be applied to various phenomena such as mechanical vibrations, sound waves, alternating current signals, and light waves
Thus, frequency quantifies how often something repeats per unit time, with the unit hertz indicating cycles per second.
