Word: spectrum
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Dates: during 1910-1919
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Theory of Shift in Spectrum Unproved...
...theory Einstein also stated that in a spectrum the solar lines would be shifted toward the red, but as no such shift has yet been found many scientists are inclined to doubt the truth of the whole theory. The inaccuracy of all instruments, however, may well be the cause of this failure and the first two proofs considered sufficient evidence of the correctness of the theory...
...Physical Colloquium. "The L Series of the Platinum X-Ray Spectrum." Dr. Harry Clark and Dr. D. L. Webster. Jefferson Physical Laboratory, Room...
...used in the courses are kept in repair and it is here that the special apparatus for investigation is constructed. The northeastern part of the basement contains the excellent new mounting for the twenty-one foot concave grating, together with other apparatus necessary for the study of problems in spectrum analysis and magneto optics. The electric current used in this work is furnished by a storage battery recently established in the old engine house at the eastern end of the main building. The whole equipment is as good as any in this country. It is at present employed...
...room and by cabinets for lecture apparatus; next comes a smaller lecture room and the students' laboratory devoted to Physics 1. The western end is taken up by research rooms devoted to the study of thermo-magnetism and to the investigation of the extreme ultra violet part of the spectrum...