Tyndall, John, 1820-1893 · New York, D. Appleton · leaf 106
ciple of conservation cannot be eluded. Letns test it by another experiment. Water, you know, isdecomposed by the voltaic current; and before you (fig. 29)is an apparatus which enables the decomposition to occur,and the resultant gases to be collected. Let our batterycontinue to decompose the water… … take the gases resulting from that decomposition, andcause them, by ignition, to recombine; the exact amountof heat missing in the battery is thus restored. We can here, in passing, solve an enigma which longperplpxed scientific men. It is by power drawn from tbebattery that we are able to effect…
Heat
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