Tyndall, John, 1820-1893 · New York : Appleton · leaf 170
od risefar more rapidly in pitch than the harmonics of a string.Other forms of vibration may be obtained bv smartly FIGURES OF THE KALEIDOPHONE. 163 striking the rod with the finger near its fixed end. In fact,an almost infinite variety of luminous scrolls can be thusproduced, the beauty of which…
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