The elements of dynamic electricity and magnetism (1903)
Atkinson, Philip. [from old catalog] · New York, D. Van Nostrand company · leaf 174
ved, opposite which is marked 50 ohms;and the resistance then becomes 51 ohms. The Wheatstone Bridge.—The Wheatstone bridge is aninstrument for measuring an unknown resistance by-comparison with a known resistance. Fig. 64 gives anideal view of its construction. Let A^ B, Cy D be fourwires… … Fig. 64.passing through each branch of the circuit will be in-versely proportional to the respective resistance of each.Now it is found that the potential between any twopoints in an electric circuit varies inversely as the re-sistance between them; and as the E. M. F, betweenany two points is…
Electricity · Magnetism
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