Inphysics,field strength refers to a value in avector-valuedfield (e.g., in volts per meter, V/m, for anelectric fieldE).[1] For example, anelectromagnetic field has bothelectric field strength andmagnetic field strength.
Field strength is a common term referring to avector quantity. However, the word 'strength' may lead to confusion as it might be referring only to themagnitude of that vector. For both gravitational field strength and for electric field strength, The Institute of Physics glossary states "this glossary avoids that term because it might be confused with the magnitude of the [gravitational or electric] field".[2]
As an application, inradio frequencytelecommunications, thesignal strength excites a receiving antenna and thereby induces a voltage at a specific frequency and polarization in order to provide an input signal to a radio receiver.Field strength meters are used for such applications as cellular, broadcasting, wi-fi and a wide variety of other radio-related applications.[3]
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