Typhoid bacilli are about one two-hundredth as sensitive to ultraviolet light of wave-lengths 2100 to 2800 Ångström units as is the photographic plate. This sensitivity then falls off, decreasing rapidly to almost zero sensitivity at about 2970, the beginning of the sun's spectrum.
Article| December 01 1917
THE ABIOTIC ACTION OF ULTRA-VIOLET LIGHT
H. S. Newcomer
From the Laboratory of the Henry Phipps Institute of the University of Pennsylvania, Philadelphia.
Received: July 14 1917
Online Issn: 1540-9538
Print Issn: 0022-1007
Copyright, 1917, by The Rockefeller Institute for Medical Research New York
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H. S. Newcomer; THE ABIOTIC ACTION OF ULTRA-VIOLET LIGHT . J Exp Med 1 December 1917; 26 (6): 841–848. doi: https://doi.org/10.1084/jem.26.6.841
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