# What is a frequency?

Question asked by: knowitall

The word frequency has a simple and precise definitions.

It is the measurement of the number of times an event is repeated during a set time period. Thus if in a minute a car goes up and down the road ten times, then the frequency is ten times a minute.

Frequency is often used to measure things such as radio waves, and hence you tune the radio to a certain frequency of wave, which here measures the number of cycles per second, e.g. wave oscillations.

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