Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 496
excitewhich 486 OTHER FORMS OF RADIANT ENERGY At some distance away is the receiving apparatus. ^ is acoherer. From one pole of it a wire B runs up in the air;from the other pole a wire leads to earth. In circuit with thecoherer are a battery F and an electric bell 0. The electricwaves travel from…
Physics
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