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Terms beginning with F

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The federal agency responsible for regulating communications in the USA.קרא עוד >

An atom or molecule containing unpaired electrons.Free radicals are active and unstable.קרא עוד >

The number of waves per time unit, usually one second.  The unit of measurement is the Hertz (Hz).קרא עוד >

Continuous bands or groups of selected isolated frequencies in the electromagnetic spectrum.קרא עוד >