Wheatstone bridge

or Wheatstone's bridge

noun Electricity.

a circuit for measuring an unknown resistance by comparing it with known resistances.
Compare bridge1(def 9), null method.

Origin of Wheatstone bridge

First recorded in 1870–75; named after C. Wheatstone

British Dictionary definitions for wheatstone bridge

Wheatstone bridge
/ (ˈwiːtstən) /

noun

a device for determining the value of an unknown resistance by comparison with a known standard resistance

Word Origin for Wheatstone bridge

C19: named after Sir Charles Wheatstone (1802–75), British physicist and inventor