Word: nebulium
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Dates: during 1920-1929
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...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...
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