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

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)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1967
Accession Number
AD0664664

Entities

People

  • Arthur Jared Crandall

Organizations

  • Michigan State University

Tags

DTIC Thesaurus Topics

  • Diffraction
  • Intensity
  • Measurement
  • Near Field
  • Photomultiplier Tubes
  • Stationary
  • Transducers
  • Visibility

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Structural Health Monitoring of Composite Structures.
  • Wave Propagation and Nonlinear Chaotic Dynamics.