PATTERNS OF SOUND IN A CRYSTAL

E&MP 98.002
(select the image at right for larger view)

Piezoelectricity

October 25, 1965

This is a schematic diagram of the experimental setup used to photograph acoustic mode patterns in a crystal subjected to high-frequency sound waves.

This "visual acoustic" system was developed by Dr. G. E. Peterson and Mr. P. N. Bridenbaugh of Bell Telephone Laboratories and may be of practical importance in developing improved transducers, filters, and frequency control devices.

The crystal used in the experiments was potassium dihydrogen phosphate (KDP).

PHOTO 10-25-65 - B4075
From BELL TELEPHONE LABORATORIES
463 West Street, New York 14
CHelsea 3-1000

Original Caption by Science Service
^© BELL TELEPHONE LABORATORIES