Cooke, Josiah Parsons, 1827-1894 · Boston, Little, Brown and Company · leaf 484
isturbance results ; but the slightest differ-ence of temperature causes a flow of electricity through the wireconnecting the two poles. The direction of the cxirrent is deter-mined by the relative positions of the bars, always following therule stated above. The force of this current, although… … rig. 361. It is sufficient, for tlie present, to state tlaat it is an applicationof tlae remarkable facts discovered by Oersted in 1820. Thiseminent physicist observed, that, if a conducting-wire throughwhich an electric current is passing is placed directly over andparallel to a magnetic…
Matter · Heat
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