SOME MEASUREMENTS OF THE ELECTROSTATIC PROPERTIES OF PHOTOGRAPHIC FILMS

1 September 1933

journal article
Published by Canadian Science Publishing in Canadian Journal of Research

Vol. 9 (3) , 197-216
https://doi.org/10.1139/cjr33-080

Abstract

This paper deals with experiments performed to determine the electrostatic properties of celluloid camera films. The information derived was used in attempts to eliminate marks due to static electricity on film used in aerial photography.Camera films were rubbed with wool or brass and the resulting electrostatic effects studied. The required atmospheric conditions were reproduced by carrying out the experiments in a tank in which pressure, temperature and humidity could be controlled independently. It was found that the charging effect was more pronounced in a moist than a dry atmosphere.Methods of eliminating the trouble caused by static electricity in aerial photography are discussed.

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