luminous radiation - traduction vers russe
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luminous radiation - traduction vers russe

LUMINOUS FLUX INCIDENT ON A SURFACE PER AREA
Luminous emittance; Luminous exitance; Luminous density
  • Illuminance diagram with units and terminology.

luminous radiation      

общая лексика

световое излучение

физика

излучение световое

luminous radiation      
световое излучение
luminous efficiency         
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MEASURE OF HOW WELL A LIGHT SOURCE PRODUCES VISIBLE LIGHT
Luminous coefficient; Luminous efficiency; Lighting efficiency; Luminous efficacies; Lighting efficacy; Lm/W; Overall luminous efficiency; Overall luminous efficacy; Wall-plug luminous efficacy; Wall-plug efficacy; Wall-plug luminous efficiency; Luminous efficacy of a source; Luminous efficacy of radiation; Lumen per watt; Lumens per watt; Bulb efficiency
luminous efficiency световая отдача;

Définition

ЛАЗЕР
1. пучок света луч, получаемый при помощи такого генератора.
Лечение лазером. Сварка лазером.
2. оптический квантовый генератор, устройство для получения мощных узаконаправленных пучков света.
Импульсный л. Л. непрерывного действия.

Wikipédia

Illuminance

In photometry, illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of how much the incident light illuminates the surface, wavelength-weighted by the luminosity function to correlate with human brightness perception. Similarly, luminous emittance is the luminous flux per unit area emitted from a surface. Luminous emittance is also known as luminous exitance.

In SI units illuminance is measured in lux (lx), or equivalently in lumens per square metre (lm·m−2). Luminous exitance is measured in lm·m−2 only, not lux. In the CGS system, the unit of illuminance is the phot, which is equal to 10000 lux. The foot-candle is a non-metric unit of illuminance that is used in photography.

Illuminance was formerly often called brightness, but this leads to confusion with other uses of the word, such as to mean luminance. "Brightness" should never be used for quantitative description, but only for nonquantitative references to physiological sensations and perceptions of light.

The human eye is capable of seeing somewhat more than a 2 trillion-fold range. The presence of white objects is somewhat discernible under starlight, at 5×10−5 lux, while at the bright end, it is possible to read large text at 108 lux, or about 1000 times that of direct sunlight, although this can be very uncomfortable and cause long-lasting afterimages.

Traduction de &#39luminous radiation&#39 en Russe