- luminous flux measurement
- измерение светового потока
English-russian dictionary of physics. 2013.
luminous flux measurement
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Luminous intensity — In photometry, luminous intensity is a measure of the wavelength weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a standardized model of the sensitivity of the human eye.… … Wikipedia
Flux — This article is about the concept of flux in science and mathematics. For other uses of the word, see Flux (disambiguation). In the various subfields of physics, there exist two common usages of the term flux, both with rigorous mathematical… … Wikipedia
talbot — (T) a unit of luminous (light) energy. One talbot is the energy carried by a light flux of one lumen in one second, that is, the talbot is the same as the lumen second (lm·s). For light of wavelength 555 nanometers (nm), the wavelength to… … Dictionary of units of measurement
lambert — (La or Lb or L) a CGS unit of luminance. Luminance is the luminous intensity of a surface, measuring the intensity of the light emitted (or reflected) in all directions per unit of area of the surface. One lambert is the luminance of a surface … Dictionary of units of measurement
Conversion of units — is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors. Contents 1 Techniques 1.1 Process 1.2 Multiplication factors … Wikipedia
Photometry (optics) — This article deals with the usage of this term in optics and lighting .Photometry is the science of measurement of light, in terms of its perceived brightness to the human eye. It is distinct from radiometry, which is the science of measurement… … Wikipedia
Light — For other uses, see Light (disambiguation). Visible light redirects here. For other uses, see Visible light (disambiguation) … Wikipedia
Lux — For other uses, see Lux (disambiguation). A lux meter for measuring illuminances in work places. The lux (symbol: lx) is the SI unit of illuminance and luminous emittance measuring luminous power per area. It is used in photometry as a measure of … Wikipedia
Lumen (unit) — The lumen (symbol: lm) is the SI unit of luminous flux, a measure of the perceived power of light. Luminous flux differs from radiant flux, the measure of the total power of light emitted, in that luminous flux is adjusted to reflect the varying… … Wikipedia
Candela — This article is about the unit of luminous intensity. For other uses, see Candela (disambiguation). Photopic (black) and scotopic[1] (green) luminosity functions. The photopic includes the CIE 1931 standard[2] … Wikipedia
Exposure (photography) — Underexposure redirects here. For the 2005 film by Oday Rasheed, see Underexposure (2005 film). A long exposure showing stars rotating around the southern and northern celestial poles. Credit: European Southern Observatory … Wikipedia
