Wheatstone bridge

noun Electricity.
a circuit for measuring an unknown resistance by comparing it with known resistances.
Also, Wheatstone's bridge.
Compare bridge ( def 9 ), null method.

1870–75; named after C. Wheatstone

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World English Dictionary
Wheatstone bridge (ˈwiːtstən)
a device for determining the value of an unknown resistance by comparison with a known standard resistance
[C19: named after Sir Charles Wheatstone (1802--75), British physicist and inventor]

Collins English Dictionary - Complete & Unabridged 10th Edition
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