Black Light for Theater Auditoriums

The demand for near-ultraviolet radiation, commonly called “black light,” in the production of luminescent effects has shown the need of a technical approach to the problem. New technics of measurement, design information, and data on sources and materials are necessary to insure most effective use of these new media. — This paper covers suggestions for energizing fluorescent carpet, decorative wall and ceiling murals, and other decorative applications. Data are presented on sources of radiation, standard filters for absorbing the visible light emitted by the sources, and the relative response characteristics of various types of luminescent materials. The effect of extraneous visible light in masking the brightness produced by fluorescence is discussed. Methods for measuring the near-ultraviolet energy from mercury light sources in the field as well as in the laboratory are explained.

Print ISSN

0097-5834

Published

1941-08

Content type

Original Research

DOI

10.5594/J12896