Optical Calibration of Vibration Pickups at Small Amplitudes

Autor:	E. R. Smith, V. A. Schmidt, Earle Jones, Seymour Edelman
Rok vydání:	1960
Předmět:	Physics Photomultiplier Acoustics and Ultrasonics business.industry Acoustics Astrophysics::Instrumentation and Methods for Astrophysics Ranging Vibration Interferometry Optics Amplitude Arts and Humanities (miscellaneous) Optical calibration Range (statistics) Ultrasonic sensor business
Zdroj:	The Journal of the Acoustical Society of America. 32:1495-1496
ISSN:	0001-4966
DOI:	10.1121/1.1935160
Popis:	A photometric device for accurately measuring the amplitudes of sinusoidal vibrations is described. The device is designed for calibrating vibration pickups. The apparatus employs a Fizeau‐type interferometer with a photomultiplier observing the fringe pattern. The method is applied to the measurement of vibrations throughout the audio and near ultrasonic frequency range with amplitudes ranging from 72 to 4400 A. Extension to amplitudes as low as 5 A can be made with some modification to the apparatus.
Databáze:	OpenAIRE
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