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 magnitude 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.
Famous quotes containing the words field and/or strength:
“I see a girl dragged by the wrists
Across a dazzling field of snow,
And there is nothing in me that resists.
Once it would not be so....”
—Philip Larkin (1922–1986)
“Fearlessness is a more than ordinary strength of mind, which raises the soul above the troubles, disorders, and emotions which the prospect of great dangers are used to produce. And by this inward strength it is that heroes preserve themselves in a calm and quiet state, and enjoy a presence of mind and the free use of their reason in the midst of those terrible accidents that amaze and confound other people.”
—François, Duc De La Rochefoucauld (1613–1680)