Six lectures on light : delivered in America in 1872-1878 (1886)
Tyndall, John, 1820-1893 · New York : D. Appleton · leaf 92
by that excellent acoustic mechanician,M. Rudolf Konig, of Paris. It. TRANSVERSE WAVES. 61 simply describe a series of parallel luminous lines uponthe screen, the length of these lines marking the ampli-tude of the vibration. Here the impression of wave-motion has totally disappeared. The most… … the two sounds flow without roughness, as if theywere but one. But, by attaching with wax to oneof the forks a little weight, we cause it to vibratemore slowly than its neighbour. Suppose that oneof them performs 101 vibrations in the time re-quired by the other to perform 100, and suppose thatat…
Light
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