What is a frequency in basic science?

In the most general sense, frequency is defined as the number of times an event occurs per unit of time . In physics and chemistry, the term frequency is most often applied to waves, including light, sound, and radio. Frequency is the number of times a point on a wave passes a fixed reference point in one second.3 May 2019

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What is the used of a frequency band?

A radio communications signal must occupy a range of frequencies carrying most of its energy, called its bandwidth. A frequency band may represent one communication channel or be subdivided into many . Allocation of radio frequency ranges to different uses is a major function of radio spectrum allocation.

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