Vesicular film, almost universally known as Kalvar, is a type of photographic film that is sensitive only to ultraviolet light and developed simply by heating the exposed film. ==History== It was originally developed at Tulane University in 1956, and then commercialized by the Kalvar Corporation starting the next year. It was originally intended t...
Found on
http://en.wikipedia.org/wiki/Vesicular_film
A heat-processed photographic film used for microfilm duplication. Requires exposure to ultra-violet light and produces an image of the opposite polarity to the original.
Found on
http://www.encyclo.co.uk/local/20462
No exact match found.
