Tyndall, John, 1820-1893 · London : Longmans, Green · leaf 450
between the two forks is not puie. I also add here, fij.194, two phases of the combination 8 : 9. LISSAJOUS FIGURES. Fig. 195. 427 … 428 LECTURE IX. To these illustrations of rectangular vibrations I addtwo others, figs. 196 and 197, from a very beautiful seriesobtained by Mr. Hubert Airy with a compound pendulum.The experiments are described in Nature for August17 and September 7, 1871. As their loops indicate, thefigures are…
Sound
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