Six lectures on light : delivered in America in 1872-1878 (1886)
Tyndall, John, 1820-1893 · New York : D. Appleton · leaf 86
ced by the circular motionof the particles. This, as proved by the brothers Weber, is the realmotion in the case of water-waves. II. INTERFERENCE OF WATER-WAVES. 56 a circular dish, for example, a disturbance at the centrepropagates itself as a series of circular waves, which,after reflection,… … figure.^ The light reflected from such a surface yieldsa pattern of extraordinary beauty. When the mercuryis slightly struck by a needle-point in a directionconcentric with the surface of the vessel, the lines oflight run round in mazy coils, interlacing and unravel-ling themselves in a wonderful…
Light
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