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Publication of DE163157CpublicationCriticalpatent/DE163157C/de
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
G01J1/48—Photometry, e.g. photographic exposure meter using chemical effects
G01J1/50—Photometry, e.g. photographic exposure meter using chemical effects using change in colour of an indicator, e.g. actinometer
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Physics & Mathematics
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General Physics & Mathematics
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Spectroscopy & Molecular Physics
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Silver Salt Photography Or Processing Solution Therefor
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Control Of Exposure In Printing And Copying
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