Elementary treatise on electricity and magnetism (1903)
Foster, George Carey, 1835-1919, Joubert, Jules François, 1834-1910. Traité élémentaire d'électricité, Porter, Alfred William, 1863- joint author · London, New York, Longmans, Green, and co. · leaf 439
m theelectromagnetic to the electrostatic -form. The magnetic lines consistin circles round the connecting rods,while the lines of electric force andinduction stretch between the twobranches; each of these sets oflines vanishes in turn : the magnetic,when the balls are at their maxi-mum difference… … 343] HERTZS EXPERIMENTS 417 then travels along it as a wave. It has already been said (341)that the velocity of propagation of energy through the ether is verygreat (3 x 10 cm. per second), but since the time period of the oscil-lations can be made exceedingly small, it is possible for the…
Electricity · Magnetism
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