A manual of electricity, magnetism and meteorology (1844)
Lardner, Dionysius, 1793-1859, Walker, Charles Vincent, 1812-1882 · London Longman, Brown, Green & Longmans · leaf 559
f copper was arranged torotate between the bars, as in thefigure ; and wires were arrangedto collect any electricity whichmight be evolved during the revo-lution of the plate. The relation of the current of electricityproduced, to the magnetic pole, to the directionof rotation of the plate, &c,… … * Exp. Researches, Series i. {§ 37, 38. BOOK VI. MAGNETO-ELECTRIC INDUCTION. 523 plate, nearest to the pole, is positive. As the pole of the earth may men tally be considered the unmarked pole, this relation of the rotation, the pole, and the electricity evolved, is not difficult to remember. Or…
Atmospheric electricity · Electricity -- Early works to 1850 · Magnetism
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