Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 40 (1933) > Annual Issue
Document Type
Research
Abstract
Oscillating piezoelectric plates of different frequencies have been made from California and South African tourmaline. These plates have a frequency response of approximately 3770 kc per millimeter of thickness. The temperature coefficient for both to be negative and is about 25.5 parts per million per degree centigrade for the African specimen and 28.1 parts per million per degree centigrade for the California crystal. Comparison of the tourmaline plates with a Y-cut quartz plate of the same size and frequency shows the tourmaline oscillators decidedly inferior on the basis of power output.
Publication Date
1936
Journal Title
Proceedings of the Iowa Academy of Science
Volume
40
Issue
1
First Page
153
Last Page
154
Copyright
©1933 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Underwood, Morris
(1933)
"On the Piezoelectric Properties of Tourmaline,"
Proceedings of the Iowa Academy of Science, 40(1), 153-154.
Available at:
https://scholarworks.uni.edu/pias/vol40/iss1/83