单词	Wheatstone bridge
释义	Wheatstone bridge /ˈwiːtstən / noun A simple circuit for measuring an unknown resistance by connecting it so as to form a quadrilateral with three known resistances and applying a voltage between a pair of opposite corners.The principle of measurement is similar to that of the Wheatstone bridge in electronics, in which an accurate measurement is made by comparing the unknown value against the value of a calibrated component.... He was advised and helped by his uncle Charles Wheatstone who invented the piece of electrical apparatus known as the Wheatstone bridge. A Kelvin Double bridge is a variant of the Wheatstone bridge used for measuring very low resistances.
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