photometer field
81Photometry (astronomy) — Photometry is a technique of astronomy concerned with measuring the flux , or intensity of an astronomical object s electromagnetic radiation. Usually, photometry refers to measurement over large wavelength bands of radiation; but, when not only… …
82Metering mode — In photography, the metering mode refers to the way in which a camera determines the exposure. Digital metering feedback …
83Albert Henry Munsell — Infobox Person name = Albert Henry Munsell image size = 200px caption = Photograph of Munsell from A Color Notation birth date = birth date|1858|1|6 birth place = Boston, Massachusetts, U.S. death date = death date and age|1918|6|28|1858|1|6… …
84Jean-Jacques d'Ortous de Mairan — Engraving by Simon Charles Miger after Charles Nicolas Cochin. Born …
85Over-illumination — This cosmetics store has lighting levels over twice recommended levels[1] Over illumination is the presence of lighting intensity (illuminance) beyond that required for a specified activity. Over illumination was commonly ignored between 1950 and …
86Atmosphere of Mercury — Atmosphere of Mercury[1] Species CD,[n 1] cm−2 SD,[n 2] cm−3 …
87Кеплер (телескоп) — У этого термина существуют и другие значения, см. Кеплер. Космический телескоп «Кеплер» Организация …
88Bunsen, Robert (Wilhelm) — born March 31, 1811, Göttingen, Westphalia died Aug. 16, 1899, Heidelberg, Baden German chemist. With Gustav Robert Kirchhoff, he observed (с 1859) that each element emits light of a characteristic wavelength, opening the field of spectrochemical …
89Bunsen, Robert Wilhelm — ▪ German chemist born March 31, 1811, Göttingen, Westphalia [Germany] died Aug. 16, 1899, Heidelberg, Baden German chemist who, with Gustav Kirchhoff, about 1859 observed that each element emits a light of characteristic wavelength. These… …
90Infrared Space Observatory — ▪ satellite European Space Agency (ESA) satellite that observed astronomical sources of infrared radiation from 1995 to 1998. After the spectacular success in 1983 of the short lived Infrared Astronomical Satellite, which produced the… …
