Incandescent Lamps for Motion Picture Service
In the development of an incandescent lamp for motion picture service, it is essential to concentrate the light source as much as possible because no condensing system can collect and utilize the rays of light from an extended source. The problem that comes up is, therefore, that of getting as much filament as possible within a given area and arranging this filament in such a way that there will be maximum illumination in the direction in which it can be utilized.
- Print ISSN
- 0096-6460
- Published
- 1918-04
- Content type
- Original Research
- DOI
- 10.5594/J18007
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