Abstract
I HAVE recently made experiments on telegraphy without wires, and during the last few days, which have been very hot, I have experienced certain phenomena which somewhat interfere with the reception of signals. The receiver used by me is constructed thus: a piece of goose-quill one inch long is stopped at each end with cork, two ordinary pins pierce each cork, their points being about inch apart; the intermediate space is filled with finely-powdered nickel; (experiments on the relative sensitiveness of receivers made with quill and glass show that those made with quill are more sensitive than those made with glass.) The receiver is attached to an acoustic resonator carrying an electrically driven tuning-fork (500 double vibrations per second).
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JERVIS-SMITH, F. Telegraphy without Wires, and Thunder-storms. Nature 56, 223 (1897). https://doi.org/10.1038/056223b0
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DOI: https://doi.org/10.1038/056223b0
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