Frequency 14
Frequency 14 : General. The frequency of a wave is the rate at which it vibrates. On a radio or TV tuner, the number at which you set the tuner indicates the frequency of the signal. The frequency is also correlated with some physical properties of the signal: how well it can pass through obstacles (e.g. buildings) and rate at which information can be transmitted. To avoid interference, defined ranges of frequencies are allocated to different applications: FM radio, AM radio, TV, cellphones, industrial applications, etc. Frequency is measured in hertz . See also hertz, radiofrequency, and microwave
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