File:Medical arc lamp.jpg

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Summary

DescriptionMedical arc lamp.jpg	English: A medical carbon arc lamp from around 1909. It consists of two carbon rod electrodes supplied with mains current creating an electric arc between them, which emitted a brilliant white light. Arc light was rich in ultraviolet light and was used to treat various skin conditions.
Date	before 1909 date QS:P,+1909-00-00T00:00:00Z/7,P1326,+1909-00-00T00:00:00Z/9
Source	Retrieved April 19, 2013 from Herbert McIntosh 1909 Practical Handbook of Medical Electricity, Therapeutic Publishing Co., Boston, USA, p. 86, fig. 51 on Google Books
Author	Herbert McIntosh

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Public domain	This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.	United States
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