Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 34 (1927) > Annual Issue
Document Type
Research
Abstract
A modification of Harrison's microphotometer has been developed, following his suggestion, which is used for accurate measurements of line widths on spectrograms. A vertical optical system using microscope lenses focuses the light on a bismuth-silver thermocouple. Accurate readings of length are obtained with a finely constructed micrometer screw. Studies have also been made on the relative intensities of lines on both optical and X-ray spectrograms. The instrument is also of use in testing the uniformity of thin films of metal.
Publication Date
1927
Journal Title
Proceedings of the Iowa Academy of Science
Volume
34
Issue
1
First Page
279
Last Page
279
Copyright
©1927 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Gwinn, I. J.
(1927)
"A Microphotometer for the Study of Spectograms,"
Proceedings of the Iowa Academy of Science, 34(1), 279-279.
Available at:
https://scholarworks.uni.edu/pias/vol34/iss1/81