Abstract
American Journal of Science, July.—Velocity of electric waves in air, by G. V. Maclean. The author describes an elementary type of coherer suitable for the Hertzian experiment of determining wave–lengths from nodes produced by metallic reflection. It consists of two globules of platinum, 1 mm. in diameter, attached to the ends of two platinum wires forming spirals about two iron terminals which run through the centre of the two brass caps of a glass tube 8˙5 cm. long. The globules can be adjusted to any small distance from each other.
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Scientific Serials. Nature 60, 383–384 (1899). https://doi.org/10.1038/060383a0
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DOI: https://doi.org/10.1038/060383a0