Henderson, C. Hanford (Charles Hanford), 1861-1941, Woodhull, John F. (John Francis), 1857-1941 · New York, D. Appleton and company · leaf 289
he Wheatstone bridge is a uniform wire stretchedbetween two fixed binding posts, and over a graduated scalewhich is provided with a sliding contact, dividing the wireinto two determined portions. The action can best beunderstood by means of a diagram, Fig. 175. The currentcoming from the battery E… … E Fig. 175.—Wheatstone bridge. be no current if C and D have the same potential. Theywill have the same potential if the resistance of A D bearsthe same relation to that of D B as the resistance of A 0bears to that of GB, or when AB:DB = AG:GB.If we substitute for A D the resistance to be measured,…
Physics
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