Abstract
ONE of the results of the increasing popularity in recent years of so-called ‘sun-ray’ treatment has been the rapid development of improved methods of generating ultra-violet rays. This has placed in the hands of the scientific worker very efficient sources of such radiation, and it is therefore not surprising that other uses of this region of the spectrum should have followed in the wake of the above developments. One of the most interesting is the generation of a characteristic fluorescence in numerous substances, and this is now widely employed as a method of testing and analysis.
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References
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GRANT, J. Fluorescence and Its Use as a Method of Testing and Analysis. Nature 133, 124–126 (1934). https://doi.org/10.1038/133124a0
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DOI: https://doi.org/10.1038/133124a0