Abstract
IN order to study the changes undergone by ergosterol under the influence of ultra-violet irradiation, the following arrangement has been devised: The flat platinum surface of a sensitive platinum-tellurium thermopile (constructed by Dr. W. Vanselow in this laboratory) was coated with a layer of solid ergosterol cemented with ether and was then exposed to monochromatic radiation from an intense quartz-mercury arc using a Hilger quartz monochromator. Variations in the intensity of the light source were checked by the use of a second thermopile.
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References
Rosenheim and Webster, Lancet, Sept. 17, 622; 1927.
Windaus, Borgeaud and Brunken, Nachr. Gesell. Wissensch. Göttingen Math.-Physik. Klasse, 313; 1927.
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KON, S. The Photochemistry of Ergosterol. Nature 122, 276–277 (1928). https://doi.org/10.1038/122276a0
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DOI: https://doi.org/10.1038/122276a0
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