Word: spectral
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...between 50 and 100 miles long." One million meteors enter the earth's atmosphere each hour, become incandescent from friction. But rarely are astronomers able to photograph the hot spots and analyze the spectra. Last week Harvard's Dr. Peter Mackenzie Millman proudly reported that he had spectral pictures of nine meteors. Six, possibly seven were mostly stone. All contained some iron (heated to vapors of between 2,600° and 4,600° F.). One or more contained calcium, manganese, aluminum, chromium. Three containing magnesium burned greenishly...
...Vagabond is in town and having been slighted by the social editor of the Transcript he is forced to blow his own trumpet. He is looking very well in his spectral way and is enjoying the health which only a vigorous summer close to nature can produce. Economic disaster directed the Vagabond's steps toward the farm where he patterned his life upon the teachings of Roussean and the Rural New Yorker...
...conclusion is that stars of different spectral classes cannot have evolved one from another, but must have been created simultaneously, and that their age is too short for any appreciable evolution having taken place. Finally, the observed recession of spiral nebulae, reflecting the phenomenon of the expanding universe, indicates a possible age of the extragalactic universe of a few thousand million years only. From all these facts we infer that probably the age of our universe does not differ very much from the age of the solar system, and that not very much more than 3000 million years have elapsed...
...Cambridge and two in Peru. Up to the present time, these four telescopes have taken 142,000 plates. The results of a study of these plates include the discovery of the first spectroscopic binary; of one thousand variable stars in globular clusters and elsewhere; of ten novae; a spectral classification of 225,000 stars, and an international system of stellar magnitudes...
...wedde hoped eventually to get H² in a pure form. Having two protons and one electron in its nucleus, it is twice as heavy as the previously known hydrogen, whose nucleus has one proton. The discoverers thought H² would be of no commercial use. It would give water different spectral color, new physical properties, but would not affect the taste. But since its nucleus is the simplest yet found consisting of more than one particle it would be a great aid in the study of nuclei, might add to data on the cosmic ray which Dr. Robert Andrews Millikan thinks...