Word: spectra
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...PHYSICAL COLLQUIUM. Luminescence of Minerals. Relations among the Spectra of the Elements. Dr. Morse and Dr. Lyman. Jefferson Physical Laboratory, Room...
Physical Colloquium. Theory of Refraction in Gases; Mr. H. L. Blackwell. The Absorption and Fluorescent Spectra of Sodium; Dr. H. W. Morse. Jefferson Physical Laboratory, Room...
Physical Colloquium. Theory of Refraction in Cases; Mr. H. L. Blackwell. The Absorption and Fluorescent Spectra of Sodium; Dr. H. W. Morse. Jefferson Physical Laboratory, Room...
Besides a large number of observations made with the East Equatorial and the meridian circle instruments both in Cambridge and at the station in Peru, observations have been made along new and unique lines of work with the Henry Draper Memorial instruments. First, the spectra of large numbers of stars have been photographed simultaneously, with the result that large numbers of objects having peculiar spectra have been discovered. Secondly, stellar spectra, six inches long, and showing several hundred lines, have been obtained, demonstrating that large numbers of stars have identical spectra. Thirdly, photographs of the entire sky have been taken...
...meeting on the 150th anniversary of the American Philosophical Society, which will be held at Philadelphia on April 3, Professor Trowbridge will read a paper on "The Spectra Gases at High Temperatures...