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Scientific American, Vol. 71, No. 9 (1894) (1894)
leaf 8
the bear- siderable deflection is shown on the galvanometer. ing cable, with a hanging arm, to which the hauling frequencies are ever to have any technical application With this simple apparatus the reflection, refraction, eable is attached. A metallic tackle block, having a is doubtful. The… … vals of a tenth a sheave is at- of asecond. A tached at the © 1894 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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