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 741
I i,. 077. Fig. 678. mn represents the insulator which separates the two coatings. By touchingB with the proof plane, which is then applied to the torsion balance, thequantity of free electricity is measured. In one experiment Faraday ob-served a torsion of 250°, which represented the free…
Physics
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