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From Wikipedia, the free encyclopedia

In physics, the field strength of a field is the magnitude of its vector value.

In theoretical physics, field strength is another name for the curvature form. For the electromagnetic field, the curvature form is an antisymmetric matrix whose elements are the electric field and magnetic field: the electromagnetic tensor.

In radio frequency telecommunications, field strength is the intensity of the received electromagnetic field which will excite a receiving antenna and thereby induce a voltage at a specific frequency in order to provide an input signal to a radio receiver for such applications as cellular, broadcasting, wi-fi and a wide variety of other radio-related applications.

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Simple English

In physics, the field strength of a field is the magnitude (size) of its (vector) value. This means that the force exerted by the field on a given object is proportional to the field strength.

In theoretical physics, the field strength is just another name for the curvature form. For the electromagnetic field, the curvature form is just an antisymmetric matrix whose elements are the electric field and magnetic field: the electromagnetic tensor.


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