field strength

noun Physics.
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.
Also called field intensity.


Origin:
1895–1900

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
field strength
 
n
1.  radio, television the intensity of an electromagnetic wave at any point in the area covered by a radio or television transmitter
2.  physics See intensity the intensity of an electric or magnetic field

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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00:10
field strength is always a great word to know.
So is gobo. Does it mean:
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
Example sentences
The field lines get closer and closer and hence the magnetic field strength
  increases dramatically.
It takes considerable electromagnetic field strength to extract sufficient
  electrons for this phenomena.
The interaction is not based on field strength but on induction.
Field strength is inversely proportionally to distance squared.
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