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From B.K. Gazey and D.G. Tucker, Applied Underwater Acoustics (1966);
Pergamon Press; reprinted with permission ducer (\ is the wavelength in metres).
This is almost the maximum range specified, so that "near-field" conditions exist
Specific acoustic resistance Measurement of true loudness Summation and
difference tones. Pi, pr, and pt, respectively. These quantities are not
independent inasmuch as the sum of the incident and reflected excess pressure
amplitudes must ...
┼ - Bib William Benton. media that will act as an acoustic filter — i.e., transmit
waves of certain frequencies well, but fail entirely to pass waves of other
frequencies. Further theoretical study indicates that this result can be realized
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review