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Scientific American, Vol. 41, No. 9 (1879) (1879)
leaf 4
wheel, D, until we meet | have chosen to determine its velocity; but if we place a spread with a glass rod in the ordinary manner.. When dry series of dotted rings side by side, the number of points with the stationary wave which hasserved to determine the | divisions; the index, O, will then point… … culation. If we now examine be the further and, to many, greater advantage of reduction ‘these lines, not as before in a © 1879 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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