- luminous intensity measurement
- измерение силы света
English-russian dictionary of physics. 2013.
luminous intensity 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
measurement system — Introduction any of the systems used in the process of associating numbers with physical quantities and phenomena (metrology). Although the concept of weights and measures (measurement) today includes such factors as temperature, luminosity … Universalium
Measurement — For bust/waist/hip measurement, see BWH. A typical tape measure with both metric and US units and two US pennies for comparison Measurement is the process or the result of determining the ratio of a physical quantity, such as a length, time,… … Wikipedia
intensity — 1. Marked tension; great activity; often used simply to denote a measure of the degree or amount of some quality. 2. The magnitude of energy flux, field strength, or force. [L. in tendo, pp. tensus, to stretch out] … Medical dictionary
Systems of measurement — A system of measurement is a set of units which can be used to specify anything which can be measured and were historically important, regulated and defined because of trade and internal commerce. Scientifically, when later analyzed, some… … Wikipedia
troland — (Td) a unit used in photometry to measure the amount of light reaching the retina of the eye. The retinal illuminance in trolands is equal to the luminance of the light shining on the eye, measured in candelas per square meter (cd/m2),… … Dictionary of units of measurement
candela — (cd) the SI base unit for measuring the intensity of light. Candela is the Latin word for candle. The unit has a long and complicated history. Originally, it represented the intensity of an actual candle, assumed to be burning whale tallow… … 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
Lighting — Not to be confused with lightning. For other uses, see lighting (disambiguation). Low intensity lighting and haze in a concert hall allows laser effects to be visible … 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
