Abstract
AFTER having shown how intrinsic brilliancy of the light operated on was the chief visual step to excellence in spectroscopic observations, the author proved that the temperature of the light must be kept constant, or we might be landed in a totally different class of physical phenomena of a most confounding character.
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References
Hofmann, Proc. Roy. Soc., xiii. 13 (1863).
Abstract of paper upon "End-on, in Place of Transverse, Illumination in Private Spectroscopy," by Mr. Piazz Smyth, Past President of R. Sc. Soc. Arts. Edinb., February 10, 1879.
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Illumination in Spectroscopy 2 . Nature 19, 400 (1879). https://doi.org/10.1038/019400a0
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DOI: https://doi.org/10.1038/019400a0