Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 33 (1926) > Annual Issue
Document Type
Research
Abstract
The reversal of the sodium line may be demonstrated without the use of a slit or a spectroscope. An incandescent lamp having either a carbon or tungsten filament is placed immediately behind a good sodium flame and viewed from a distance of fifteen or twenty inches through a diffraction grating. The first- and second- order spectra, right and left, will both be in view and in the orange-yellow region of each will appear a sharp dark-line image of the filament of the lamp. This image constitutes the dark-line spectrum of the sodium vapor.
Publication Date
1926
Journal Title
Proceedings of the Iowa Academy of Science
Volume
33
Issue
1
First Page
239
Last Page
240
Copyright
©1926 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Spinney, L. B.
(1926)
"Notes on the Reversal of the Sodium Line,"
Proceedings of the Iowa Academy of Science, 33(1), 239-240.
Available at:
https://scholarworks.uni.edu/pias/vol33/iss1/58