field strength

American  

noun

Physics.

1. the vector sum of all forces exerted by a field on a unit mass, unit charge, unit magnetic pole, etc., at a given point within the field.

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field strength British  

noun

1. radio television the intensity of an electromagnetic wave at any point in the area covered by a radio or television transmitter

2. physics the intensity of an electric or magnetic field See intensity

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Etymology

Origin of field strength

First recorded in 1895–1900

Example Sentences

Such maps show deviations from the average field strength over the surface of the Earth.

From The Wall Street Journal • Nov. 20, 2025

Magnetic field strength is measured in terms of teslas, and Niron's magnets are currently at one tesla.

From BBC • Apr. 4, 2024

The researchers repeated the experiment more than a dozen times, varying the magnetic field strength at the top and bottom of the trap to rule out possible errors.

From Science Daily • Sep. 27, 2023

Reduce the field strength by a factor of 25 and the polarization falls with it.

From Science Magazine • Feb. 22, 2023

The sunspots, sometimes visible to the naked eye at sunset, are cooler regions of enhanced magnetic field strength.

From "Cosmos" by Carl Sagan