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Application filed by S A RichardfiledCriticalS A Richard
Publication of CH286883ApublicationCriticalpatent/CH286883A/fr
G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
G01J1/00—Photometry, e.g. photographic exposure meter
G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
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Physics & Mathematics
(AREA)
General Physics & Mathematics
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Spectroscopy & Molecular Physics
(AREA)
CH286883D1952-04-151952-04-15Instrument à déterminer les temps de pose en photographie.
CH286883A
(fr)