Abstract

During the past five years, a carbon arc source, which is basically a 24-in. Corps of Engineers searchlight with the standard parabolic mirror replaced by an ellipsoidal reflector, has been developed for use in a study of radiant energy burns in experimental animals. Accessory equipment has been devised which permits control over irradiance and exposure time, with a maximum irradiance of about 31.8 cal/cm2–sec, and a minimum exposure time of 0.1 second. This report describes the source and its operational characteristics.

© 1954 Optical Society of America

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