Optical Methods for Absolute Measurement of Sound Pressure in Liquids.

Abstract : This report includes: DIFFRACTION PATTERNS PRODUCED BY FINITE AMPLITUDE WAVES, by M. A. Breazeale and E. A. Hiedemann. 6 Feb 61. (Reprint from the Jnl. of the Acoustical Society of America 33:700-701, May 61) LIGHT DIFFRACTION BY PROGRESSIVE ULTRASONIC WAVES IN PLEXIGLAS, by W. G. Mayer and E. A. Hiedemann. 14 Mar 60. (Reprint from Acustica 10:252, 1960) DIFFRACTION OF LIGHT BY ULTRASONIC WAVES OF VARIOUS STANDING WAVE RATIOS, by B. D. Cook and E. A. Hiedemann. 16 Jan 61. (Reprint from the Jnl. of the Acoustical Society of America 33:945-948, July 61) EXPERIMENTAL STUDIES OF THE LEAST STABLE WAVEFORM, by M. A. Breazeale. (Presented at the 61st National Meeting of the Acoustical Society of America, May 1961): The experiment was designed to demonstrate the inversion of waveform on reflection from a pressure release boundary, in propagation through a liquid, and the decrease of distortion with distance.