Word: nebulium
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...scaffolding to bridge gaps which could not be filled with the instruments and information at hand. Example: splitting the light of distant nebulae in their spectroscopes, astronomers got spectrum lines which they could assign to no known element. Accordingly they created by mutual consent a new element, called it "nebulium," and doubted that it existed. Years later they found "nebulium" to "be their familiar friends oxygen and nitrogen, ionized into unfamiliar atomic states...
...excitation has been definitely found to coincide with analysis of three of the strongest coronal lines. For years "coronium" a purely hypothetical element, had been considered the cause of the radiations from the sun's corona, just as the light of nebulae was long attributed to the mythical "nebulium...
...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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