Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 820
e coil can be readoff by a spot of light reflectedfrom a mirror (822) attached toit, and for small angles the cur-rent is proportional to tangentof the angle of deflection (823).Induction currents due to themotion of the coil in the fieldare produced, and as this is verypowerful the galvanometer… … Fig. 761. product of a constant into the sine of half the angle of the first swing is thena measure of the strength of the current, so that if momentary currents ofdifferent strengths are passed through one and the same galvanometer theywill be measured by the sines of the corresponding angles of…
Physics
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