Gage, Alfred P. (Alfred Payson), 1836-1903 · Boston, London, Ginn · leaf 221
-appears, but it reappears at the in-termediate points. That is, thereare four intervals in the spacearound the fork where the twoseries of waves generated by thetwo tines interfere to producemutual destruction. These arecalled technically the cones of silence. Return to the position wherethere is… … FjG. 165, FORCED AND SYMPATHETIC VIBRATIONS. 205
Physics
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