Laboratory exercises in physics for secondary schools (1902)
Twiss, George Ransom, b. 1863 · New York, London, The Macmillan company · leaf 146
ctionalarea, and substance, and to determine the resistivitiesof the materials of which the wires are made. MAGNETISM AND ELECTRICITY 117 Method. — The resistances are to be measured bythe method of Wheatstones Bridge. Theory of the Wheatstone Bridge. — Let there bean arrangement of conductors… … Fig. 30. -Explaining the theory of Wheat-stones Bridge. through a galvanometer, 6r, in connection with thesetwo points. Then B and 0 are equipotential points.(Why ?) Also, — let Fx and rx be the fall of potential and the resistancebetween A and B,F2 and r2 be the fall of potential and the…
Physics
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