Tyndall, John, 1820-1893 · New York : Appleton · leaf 172
4, 5, 6, 7. Numbers to the squares of which the ) .. .. . . . .. , \ 3, 5, 7, 9, 11, 13. pitch is approximately proportional) Here, also, we have a similarly rapid rise of pitch to thatnoticed in the last two cases. For musical purposes the first division only of a freerod has been employed. When… … porting the cord at one end by a hook k and holding it atthe other in the left hand, I run the hammer h along the 166 SOUND. series of bars, and produce an agreeable succession of musi-cal tones. Instead of using the cord, the bars maj test attheir nodes on cylinders of twisted straw; hence the…
Sound
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