Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 442
s the tangent galvanometer. Itconsists of a short magnetic needle,not exceeding one inch in length,suspended, or poised at the centreof a large open ring or circular coilof copper wire not less than teninches in diameter. A light pointeris usually attached to the needle,and its deflection is read… … Fio. 522.—Tangent galvanometer. 432 MAGNETIC RELATIONS OP THE CURRENT intensity of the eivrrent will vary as the tangent of theangle of deflection of the needle. Thus, if the current corresponding to any angle of deflection,say one ampere, is known, the current corresponding to anyother angle of…
Physics
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