Word: spectra
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Dates: during 1920-1929
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...Band Spectra Bears Investigation...
...Saunders, Professor of Physics, to purchase a Moll Recording Microphotometer for use in research of the structure of spectra...
Professor William Duane '93. Research Fellow in Physics, a noted Roentgen ray expert, is at present attempting to determine the structure of the atom by means of X-ray spectra. A current of tremendous voliage is projected into a Roentgen tube arranged in such a way that the X-ray generated will be passed through a diamond prism. The resulting spectrum is caught on a photographic plate...
...detected a presence fainty visible between them. Bringing them further out into the open-he was working with X-rays and used delicate refining methods to isolate the two metals that he wished to examine more closely-he clearly beheld this intervening shadow. It appeared in the wavelength spectra of Nos. 60 and 62 as a line that belonged to neither yet was identical in both. Forthwith, though he had no lump of new metal in his hand, he was able to announce that be had discovered Element No. 61-one of the five unknowns predicted by Science...
...Kemble, Assistant Professor of Physics, to defray the expenses of experimental investigation of the influence of a magnetic field on band spectra...