Tyndall, John, 1820-1893 · New York, D. Appleton · leaf 96
answer is soon given. Insteadof uniting the two ends of the coil directly, I con-nect them with a sensitive galvanometer. When thecoil is lifted, we obtain immediately a deflection of theneedle, proving that the lifting of the coil, when its endsare connected, evokes an electric current which… … Holding the same coil, with its ends a, b, free, thus ver-tically (fig. 25), I thrust a bar-magnet, m n, horizontal);half-way through it. An amount of force necessary totransport, with this velocity, a body of the weight ofthe magnet, is expended in this act; what is called inertia, and it only,…
Heat
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