Accession Number : AD0664664

Title :   MEASUREMENT OF THE VELOCITY OF SOUND IN WATER BY OPTICAL METHODS.

Descriptive Note : Technical rept.,

Corporate Author : MICHIGAN STATE UNIV EAST LANSING ULTRASONICS LAB

Personal Author(s) : Crandall,Arthur Jared

Report Date : NOV 1967

Pagination or Media Count : 64

Abstract : Several new optical methods have been developed for the measurement of sound velocities in transparent fluids. The visibility pattern from stationary, progressive and pulsed progressive waves are detected by a fast response photomultiplier tube rather than visually, which allows the use of lower sound intensities. A theoretical expression is developed for the errors caused by diffraction in the near field of a circular transducer. The velocity of sound in distilled water was measured to be 1517.70 plus or minus .20 m/sec at a temperature of 34.00C. (Author)

Descriptors :   (*UNDERWATER SOUND, VELOCITY), MATHEMATICAL ANALYSIS, INTERFEROMETERS, ULTRASONIC RADIATION, OPTICAL INSTRUMENTS, MEASUREMENT, ACOUSTIC PROPERTIES

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE