Wheatstone bridge

1833,1843

Wheatstone bridge

The book of science

Tom Sharp

Samuel Hunter Christie, Charles Wheatstone electromagnetism

Wheatstone bridge

Christie bridge

Other bridges

Only a handful of years after the definition of Ohms law (establishing the relation between voltage, current, and resistance), scientists created the first useful circuits that took advantage of this knowledge. Wheatstone bridges were first used for analyzing soils.

See also in The book of science:

Readings on wikipedia: