Gilley, Frank M · Boston, Allyn & Bacon · leaf 472
MEASUREMENT OF BESISTANCE. 461 the experiment of section 457, p. 401. How can the strengthof magnetic fields be compared by a vibrating magnet ? … Fig. 418. 534. Points of Equal Pressure. — In a board cut two grooves,CED and CFD, Fig. 418. Fill these grooves with mercury, andconnect at G and D with the poles of a battery, B. The cur-rent at C divides, part passing by eachbranch, just as a river divides in passingaround an island. Between E…
Physics
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