A text-book of physics : with sections on the application of physics to physiology and medicine (1902)
Lehfeldt, Robert Alfred, 1868-1927 · London : E. Arnold · leaf 262
Fig. 91 … Fig. 92. them: when the charges are of the same sign the force is arepulsion; when of different signs, an attraction. This law 1 The lines of force are identical in arrangement with those of magneticforces which would be produced if each quantity of electricity werereplaced by an equal quantity of…
Physics
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