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Show Speed of Electricity. The fact is generally known that, according ac-cording to the experiments of the late Professor Heinrich Hertz at Bonn, the velocity with which electricity is propagated prop-agated is nearly identioal with the velocity ve-locity of light. The identity may be perfect, per-fect, but experiments have as yet failed to prove it so. In a recent communication to the French Academy of Sciences, M. Mas-cart Mas-cart has shown that the mean velocity of electricity, as deduced from experiments, experi-ments, is 188,185 miles per second. This is about 1 per cent greater than the velocity of light, which is 188,300 miles per second. It is believed that if light and eleo-tricity eleo-tricity do move with exactly the same speed the velocity ascribed to light more closely represents that speed than the velocity ascribed to electricity, because the experiments are most satisfactory and probably more accurate in the case of light. Youth's Companion. |