. Light energy, its physics, physiological action and therapeutic applications . radiations have thus been accurately de-termined and lie in that portion of the spectrum between A. =(wave lengths) 3,287 and 2,265, or m about the middle thirdof the ultra-violet region as seen in a photograph of thespectrum of carbon. Neither the extreme ultra-violet northose nearest to the visible violet region appeared to be affected portion of the bactericidal plates correspondedto a photograph taken of this portion of the spectrum, and itwas possible to identify the nearly sterile lines on the pla
. Light energy, its physics, physiological action and therapeutic applications . radiations have thus been accurately de-termined and lie in that portion of the spectrum between A. =(wave lengths) 3,287 and 2,265, or m about the middle thirdof the ultra-violet region as seen in a photograph of thespectrum of carbon. Neither the extreme ultra-violet northose nearest to the visible violet region appeared to be affected portion of the bactericidal plates correspondedto a photograph taken of this portion of the spectrum, and itwas possible to identify the nearly sterile lines on the platewith those known to exist in the ultra-violet spectrum ofcarbon. The conclusion is, therefore, reached that relatively theaction of the other portions of the spectrum is negligiblewith the activity of this portion, although when using whitelight it is possible that there is a slight action extendingover the whole spectrum. This conclusion affords, then, aphysical basis for similarity of therapeutic effect from widelydifferent adjustments of arc-light mechanisms, giving good. Fi Experiment with Dead Frogs Foot.
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