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The Ultra-Violet Band of Ammonia, and Its Occurrence in the Solar Spectrum
A question of great interest in connection with the solar spectrum is that of the origin of the thousands of unidentified faint lines which were photographed and catalogued by Rowland. Some of these
Spectroscopic investigations in connection with the active modification of nitrogen.—I. Spectrum of the afterglow
The method of producing and isolating the nitrogen afterglow adopted in the observations dealt with in the present paper was that described by one of us in the recent Bakerian lecture. A continuous
The Spectrum of Ionised Nitrogen (N II)
In a previous communication it was shown that many of the lines in the spectrum of singly-ionised nitrogen (N II) in the region λ 6000 to λ 3000 were accounted for by triplet and singlet terms, in
The Spectra of Bright Southern Stars
THE well-known researches on stellar spectra which have been carried on for many years at the Harvard College Observatory under the direction of Prof. E. C. Pickering have now reached another very
Solar and Magnetic Distrubances
IN connection with the magnetic storm of Saturday last, October 31, it may be of interest to record that observations made between 10 and 11 a.m. on that day by Prof. Callendar and myself showed a
The Fluted Spectrum of Titanium Oxide
In a previous paper it was shown that most of the dark flutings which are characteristic of the spectra of Antarian or third type stars correspond with flutings which appear in spectra obtained from
The spectrum of the flame of carbon disulphide
The present investigation of the spectrum of the flame of carbon disulphide was undertaken in the hope that further light might be thrown on the process of combustion of this substance. Extensive
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