Increased Light for Projection of 16-mm Film with Carbon Arcs
A new 6-mm experimental carbon is described which makes it possible to project 2½ times as much light for 16-mm film as the present 6-mm “Pearlex” high-intensity carbons. A 7-mm “Suprex” carbon offers twice as much light as the “Pearlex” carbon and longer burning life than the 6-mm experimental carbon. Measurements of radiant energy intensity at the film aperture and spectral composition are given.
- Print ISSN
- 0097-5834
- Published
- 1947-05
- Content type
- Original Research
- DOI
- 10.5594/J12697
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