Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 445
It .24, r, >0 = T — V rr From the 1st and 3d of these equations. 25 and from the 2d and 4th. (26) r, i2 = r, i.. 434 GAL VANOMB TR Y. Now, since all the current which flows through AB, bysupposition, also goes through BO, Hence, substituting and dividing, (27) r0 r. … One of the common forms which Wheats tones bridgetakes in practice, and known as the slide-wire bridge, is shown in Fig. 275. From A to O aGerman-silver wireof uniform cross sec-tion is stretched overa scale of equal parts.The j)ortions 0f thecircuit AB O, indi-cated by heavy lines, are stout…
Physics
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