Gage, Alfred P. (Alfred Payson), 1836-1903 · Boston, London, Ginn · leaf 522
ard tangent galvanometer.The manifold uses to which galvanometers are put in a physical laboratory properlyrequire a variety of instruments, and this would make a complete equipment quiteexpensive. EXTERNAL RESISTANCE. 501 same circuit the wire on the spool numbered 4 on the platform,^ S(Kg. 389).… … FIG. 389. The deflection is now less than before. The copper wire on this spoolis 16 yards in length; its size is No. 30 of the Brown and Sharpe wiregauge. When this spool is in circuit, the circuit is 16 yards longer thanwhen the spool is out. The effect of lengthening the circuit is to weakenthe…
Physics
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