. Light energy, its physics, physiological action and therapeutic applications . on the nerves. It isquieting and von Jaksch1 emphasizes the soothing soporificeffect of blue light and uses blue glass chimneys upon lampsin his sick wards; (4) by its use healing of wounds is pro-moted ; (5) exposure to blue light energy increases thepower to do muscular work (Pansini). The Minim Lamp.—In order to bring the visible chemi- *XX. Congress f. innere Medicine, 1902. ULUE LIGHT ENERGY. 579 cal frequencies of light within the reach of the general prac-titioner, Minim devised the arrangement of light mec
. Light energy, its physics, physiological action and therapeutic applications . on the nerves. It isquieting and von Jaksch1 emphasizes the soothing soporificeffect of blue light and uses blue glass chimneys upon lampsin his sick wards; (4) by its use healing of wounds is pro-moted ; (5) exposure to blue light energy increases thepower to do muscular work (Pansini). The Minim Lamp.—In order to bring the visible chemi- *XX. Congress f. innere Medicine, 1902. ULUE LIGHT ENERGY. 579 cal frequencies of light within the reach of the general prac-titioner, Minim devised the arrangement of light mechanismbearing his name. It is inexpensive and portable, but notsuperior, as has been claimed, to the original arrangementof arc light mechanisms used by Finsen, or the many otherarc light mechanisms in use both in this country and are, to a certain extent, interchangeable in their uses,but the Minim lamp can in no sense take the place of the arclamp, not alone because of the glass enclosure, limitingthereby the ultra-violet frequencies, but because the quantity. Fig. of light is absolutely inefficient in the deeper seated, longerstanding, and more fully organized morbid processes. It isone thing to secure brilliant results in the production ofanaesthesia in limited areas, the perfect sepsis and healingof superficial wounds, the relief of pain in recently injuredjoints, but it is a different matter to successfully combat ormodify more extensive and profound pathologic states, forexample, the deeply infiltrated and indurated tissues of oldlupus cases, pulmonary tuberculosis, spinal cord lesions, asin locomotor ataxia. Here it becomes a matter of a much 580 LIGHT ENERGY. greater expenditure of energy than is possible with an in-candescent lamp. The greater the expenditure, the moreprofound the influence, and to that end the more powerfulsources of light, as the electric arc, should be used. And inthe event of the visible chemical frequencies alone beingdesired f
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