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Duplication of the Sun Spectrum with a Modified Carbon Arc

Duplication of the Sun Spectrum with a Modified Carbon Arc Abstract In a previous paper1 dealing with a method of testing for pathologic skin reactions to light, a modified carbon arc light source was described. This utilized a Bausch & Lomb mechanical feed arc fitted with a nozzle and a filter holder. A No. 9863 Corning glass filter was used to modify the light. The use of this filter has been justly criticized by Kesten,2 in that it transmits wave lengths as low as 2,537 A. and screens out most of the visible light (Fig. 1). This paper will describe a filter and the modifications of the nozzle to accommodate it, which, when used in combination with the carbon arc, both quantitatively and qualitatively approaches the spectrum of the sun. There are 2 sources of light from the carbon arc. The first is that from the incandescent core of the carbon. Like any incandescent body, it is a continuous References 1. We are grateful to Mr. Edmond J. Des Rosiers of Hanover, N.H., who designed and fabricated the nozzle attachment. 2. Jillson, O., and Curwen, W. L.: Photoxicity, Photoallergy, and Photoskin Tests , A.M.A. Arch. Dermat. 80:678-689, 1959.Crossref 3. Kesten, B. M., in discussion on Jillson and Curwen.1 4. Kovacs, R.: Electrotherapy and Light Therapy , Philadelphia, Lea & Febiger, 1956, p. 360. 5. Urbach, F.: Sources of Radiant Energy for Medical Uses: Investigative Needs , J. Invest. Dermat. 32:167-169, 1959. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Dermatology American Medical Association

Duplication of the Sun Spectrum with a Modified Carbon Arc

Archives of Dermatology , Volume 82 (6) – Dec 1, 1960

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Publisher
American Medical Association
Copyright
Copyright © 1960 American Medical Association. All Rights Reserved.
ISSN
0003-987X
eISSN
1538-3652
DOI
10.1001/archderm.1960.01580060168035
Publisher site
See Article on Publisher Site

Abstract

Abstract In a previous paper1 dealing with a method of testing for pathologic skin reactions to light, a modified carbon arc light source was described. This utilized a Bausch & Lomb mechanical feed arc fitted with a nozzle and a filter holder. A No. 9863 Corning glass filter was used to modify the light. The use of this filter has been justly criticized by Kesten,2 in that it transmits wave lengths as low as 2,537 A. and screens out most of the visible light (Fig. 1). This paper will describe a filter and the modifications of the nozzle to accommodate it, which, when used in combination with the carbon arc, both quantitatively and qualitatively approaches the spectrum of the sun. There are 2 sources of light from the carbon arc. The first is that from the incandescent core of the carbon. Like any incandescent body, it is a continuous References 1. We are grateful to Mr. Edmond J. Des Rosiers of Hanover, N.H., who designed and fabricated the nozzle attachment. 2. Jillson, O., and Curwen, W. L.: Photoxicity, Photoallergy, and Photoskin Tests , A.M.A. Arch. Dermat. 80:678-689, 1959.Crossref 3. Kesten, B. M., in discussion on Jillson and Curwen.1 4. Kovacs, R.: Electrotherapy and Light Therapy , Philadelphia, Lea & Febiger, 1956, p. 360. 5. Urbach, F.: Sources of Radiant Energy for Medical Uses: Investigative Needs , J. Invest. Dermat. 32:167-169, 1959.

Journal

Archives of DermatologyAmerican Medical Association

Published: Dec 1, 1960

References