Word: spectra
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...Annie J. Cannon, Curator of Astronomical Photographs at the Harvard Observatory, where there is the largest and most valuable collection of astronomical photographs in the world. Dr. Cannon is recognized as the most eminent woman astronomer, and is the author of the Henry Draper Catalogue of Stellar Spectra, in which a quarter of a million stars are classified...
...comprehensive investigations have been undertaken here, which cannot at present be duplicated at any other Observatory. There is space to speak of two such problems; a survey of the whole sky for the discovery and study of variable stars, and for the classification of stars by means of their spectra...
...mounting are in process of construction in Pittsburgh, and the mounting will probably be shipped before the end of the calendar year. The new reflector will be devoted to various studies, where great light-gathering power is essential. Among its problems will be the analysis of the spectra of southern nebulae, the determination of the velocities of bright stars, the establishment of standard series of magnitudes, the investigations of the light changes of faint variable stars, and the general analysis of the structure and content of the two star clouds of Magellan...
Nebulium. Certain unfamiliar lines in the spectra of far off nebulae have long been thought by astronomers to be made by a mysterious element which they called nebulium. This idea was exploded by Professor Ira Sprague Bowen, famed physicist colleague of Dr. Millikan. He found the lines are caused by the very familiar elements oxygen and nitrogen. They seemed unfamiliar because, in the rare atmosphere around the stars these elements have room to cut complicated capers, storing up energy for some time, then jumping actively and shooting off rays. In the dense atmosphere of the earth they are always being...
...Loomis '10, associate professor of Physics at New York University, will study the new quantum mechanics, especially in relation to problems in band spectra...