Word: spectra
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Dates: during 1920-1929
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Within the last few years the spectra of more than 75,000 faint stars have been classified in the star clouds of the Milky Way by Miss Cannon and her assistants at the Harvard Observatory. She has classified altogether more than 300,000 stars, and the resulting catalogue is one of the fundamental collections of data for astronomers...
William Hung, Professor of History in Yenching University, China, will lecture here on Chinese History. Otto Oldenburg, Professor of Physics at the University of Gottingen, Germany, will lecture on physics the first half year with special emphasis on molecular structure and band spectra...
Hardly any story of science has a more romantic appeal than that of the spectra of the stars...
...Spectra Spectacular...
...means of a prism placed over the object glass of the telescope, photographs of stellar spectra have been taken at Harvard for the last forty years. The light of any star of sufficient brightness in the field of view is spread out into a band, showing characteristics by which the spectra can be classified into various groups...