An actinograph is an instrument for measuring or estimating the amount of light available, in terms of its ability to expose photographic film. That is...

prefix actin for scientific instruments, effects, and processes. The actinograph is a related device for estimating the actinic power of lighting for...

innovations was a photographic exposure estimation device known as an actinograph. H&D speed numbers, originally described in 1890, for film speed measurements...

meteorological scientist and university professor. He invented the "Robitzsch Actinograph", a type of pyranometer and wrote numerous scientific books and articles...

department at the Museum of Modern Art, acquired 900 cans of film from the Actinograph Corp. Bronx Biograph studio and laboratory facitlies, which was closing...

specialized slide rules for photographic applications. For example, the actinograph of Hurter and Driffield was a two-slide boxwood, brass, and cardboard...

assigned management of the property to one of its own subsidiaries, The Actinograph Corp., which held it until 1948. Martin Poll (on July 21, 1959, sworn...

film were discovered in a cache of 900 film canisters donated from the Actinograph Corp. Bronx Biograph studio and laboratory facilities from the contents...

light, and published Researches on Light in 1844. He also developed the actinograph in 1845. Hunt had a long-abiding interest in poetry as well. He regularly...