Merchant, F. W. (Francis Walter), 1855-1937, Fessenden, Cortez, b. 1852 · Toronto : Copp, Clark · leaf 183
Observe the sound produced. Experiment 3- Have a series of holes punched at equal distances in acircular disc along a circle near its circumference. Mount thedisc on the spindle of the whirling-machine (Fig. 142). Inserta piece of glass tubing, the bore of which is about the sizeof the holes in the…
Physics
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