Word: spectrum
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Dates: during 1910-1919
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Professor Edward C. Pickering has discovered through a photograph taken at the Harvard Astronomical Laboratory that the hydrogen line on the spectrum of the new star discovered by Professor Errebo at Dombaas. Norway shows dark instead of the usual bright yellow...
...PHYSICAL COLLOQUIUM. "Some Recent Results in Spectrum Analysis." Mr. W. O. Sawtelle, Jefferson Physical Laboratory, Room...
...PHYSICAL COLLOQUIUM. "The Spectrum of Sodium Vapor." Mr. T. T. Smith. Jefferson Physical Laboratory, Room...
...PHYSICAL COLLOQUIUM. "The Spectrum of Sodium Vapor." Mr. T. T. Smith Jefferson Physical Laboratory, Room...