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Publication date
Application filed by Nicola StefanifiledCriticalNicola Stefani
Publication of CH79346ApublicationCriticalpatent/CH79346A/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
G01J1/38—Photometry, e.g. photographic exposure meter using wholly visual means
G01J1/40—Photometry, e.g. photographic exposure meter using wholly visual means using limit or visibility or extinction effect
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Spectroscopy & Molecular Physics
(AREA)
Manufacture Of Macromolecular Shaped Articles
(AREA)
Viewfinders
(AREA)
CH79346A1917-12-151917-12-15Verfahren und Vorrichtung zur Ermittlung der Belichtungszeit bei photographischen Aufnahmen
CH79346A
(de)