Electricity and magnetism for advanced students (1920)
Starling, Sydney George, 1873- · London Longmans, Green · leaf 91
d coil galvano-meter has generally a lower resistance. The loss of sensitiveness dueto having fewer turns is, however, made up for by the very high valueof the magnetic field employed. The permanent magnets are generallybuilt up of several hard-steel horseshoe magnets to ensure permanenceand great… … Fig. 72.
Electricity · Magnetism
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