A 4-microsecond flashing light synchronized with framing of motion-picture cameras and its application in schlieren photography
Flash unit synchronized with framing of motion picture cameras in schlieren photography
Engineering topics
Publications and source records attributed to Lindsey, W. F..
Flash unit synchronized with framing of motion picture cameras in schlieren photography
Duplex schlieren optical system with one channel for data recording and second channel for visual monitoring
Expansion of EV /exposure value/ system, deriving equations relating photographic factors for basic and flash photography
Stereo photomacrography system provides sharply focused and correctly exposed stereo pairs of photographs through a stereomicroscope. The system uses components of the old system but incorporates a sharp focusing system and includes an improved photometer.
Application of the exposure value system requires that the system be extended to high brightness level and expanded to include filter factors. A minimum of four photographic factors are involved in the evaluation of an exposure which, when determined from tables of 1-stop interval, could introduce noticeable error.
Equation derivations for expansion of exposure value system for basic and flash photography
Expansion of additive value system to include filter factors and transmittance for high brightness electronic flash photography