Abstract
SINCE August 5, 1958, a patrol spectrograph at Hallett Station in Antarctica has frequently shown the presence of a strong emission line in the region of 6705 A. from the twilight sky. Following a report of this, a grating spectrograph at Invercargill, New Zealand, was exposed on September 5, 1958, to the radiation coming from the twilight sky between the horizon and 20° altitude, on a bearing of 175° (true). A feeble line at 6707 ± 2 A. was detected on this occasion, and on several subsequent occasions. The use of a minus ultra-violet filter confirmed that the line was in the first-order spectrum. Exposures at varying states of twilight showed that the line was enhanced in twilight at about the same time as the well-known sodium D-line enhancement. Hallett station has also observed this twilight enhancement, both morning and evening, from the date of the first detection.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Pearse, R. W. B., Proceedings of the Conference on Auroral Physics, 341 (U.S. Department of Commerce, Washington, 1954).
Chamberlain, J. W., and Meinel, A. B., “The Earth as a Planet”, 514 (Univ. of Chicago Press, 1954).
Roach, F. E., N.B.S. Report No. 5006, 19 (National Bureau of Standards, Washington, 1956).
“M.I.T. Wavelength Tables” (Wiley, New York, 1939).
Filippov, A., and Prokofjew, W., Z. Phys., 56, 458 (1929).
Gadsden, M., J. Atmos. Terr. Phys., 10, 177 (1957).
Nicolet, M., Seventh Report of Commission for Solar-Terrestrial Relations, 165 (1951).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
GADSDEN, M., SALMON, K. Presence of 6707 A. Radiation in the Twilight Sky. Nature 182, 1598–1599 (1958). https://doi.org/10.1038/1821598a0
Issue Date:
DOI: https://doi.org/10.1038/1821598a0
This article is cited by
-
Lithium Emission in Twilight at Uppsala during November 1962
Nature (1963)
-
Origin of Sodium and Lithium in the Upper Atmosphere
Nature (1959)
-
Origin of Upper-Atmosphere Lithium Atoms responsible for the New Twilight Airglow at 6708 A.
Nature (1959)
-
Observations of the Lithium Lines in the Twilight Airglow in the Northern Hemisphere
Nature (1959)
-
The Twilight Radiation at 6708 A.
Nature (1959)
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.
