Abstract
WHEN we were taking spectra of a high-frequency operated interrupted a.c. arc with the Zeiss auto-collimation camera (Föorsterling set of 3 prisms, f = 1,300 mm.), a doubling of spectral lines was observed. The distances of the components increase with increasing refractive indices n and decreasing λ. It was ascertained that the trouble was due to oscillations of the prisms, which were in perfect synchronization as to period and phase with the cycles of the light source. These oscillations were caused by the vibrations of the housing of the arc source, which was placed too near the support of the spectrograph.
Similar content being viewed by others
Article PDF
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
JUNKES, J., SALPETER, E. Unusual Doubling of Spectral Lines. Nature 174, 138 (1954). https://doi.org/10.1038/174138a0
Issue Date:
DOI: https://doi.org/10.1038/174138a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.