Definition of Charles Wheatstone from the Oxford Advanced Learner's Dictionary

 

Charles Wheatstone

 
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(1802-75) an English scientist and inventor. He invented many things, including the kaleidoscope (= a toy consisting of a tube containing pieces of coloured glass and mirrors which reflect these so that changing patterns are formed when the tube is turned), the electric clock and the Wheatstone bridge, a device for measuring electrical resistance. He taught physics at London University, and was made a knight in 1868.