Laboratory exercises in physics for secondary schools (1906)
Twiss, George Ransom, b. 1863 · Chicago, Scott, Foresman and company · leaf 185
be moved must belearned by practice, and is twice as great for a fork SOUND 163 making 256 vibrations as for one making 128 vibra-tions. (Why ?) (c7) Set the fork and pendulum to vibrating, andslide the plate. If the trial is successful, a set of tracings likeFig. 34 will be obtained. It is well to… … Fig. 34. —Showing the appearance of the smoked glass after takingthe tracings. trough to trough of the w7avy line traced by the forkrepresents one complete vibration of the fork. Countthe number of vibrations and tenths of a vibration ofthe fork traced between a and e, c and g, e and g,and so on.…
Physics
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