Luminescence intensity (photometric) What is the meaning?
Answer: luminous intensity (light, I) is defined as: point source in the party upward luminous intensity, which is luminous body in unit time by the light of the firing, referred to as luminosity, common units for the candlelight (cd, Candela), an international definition for a candlelight whale oil burning candles made from 120 per hour grid cold (grain) issued by the lighting, a grid equivalent to 0.0648 grams of cold

Luminescence intensity (luminosity) of units?
Answer: luminous intensity candlelight common units (cd, Candela), the international standard candles (LCD) for the definition of an ideal blackbody in platinum freezing point temperature (1769 ¡ã C), perpendicular to the trend of (the surface area of 1m2) in the direction of the ten thousandth of luminosity 60, the so-called ideal blackbody radiation object is equivalent to a rate, the energy absorbed by objects can all radiotherapy, and will lead to maintain uniform temperature has been fixed, the international standard candles (Dresden) and the old standard candles (candle) swap between 1candela = 0.981candle


What is flux? Lumens units?
Answer: Lumens (¦Õ) is the definition of point source or non-point source in the unit time issued by the energy, which may have a visual (one can feel out the radiation flux) is known as flux. The unit of luminous flux in lumens (lm abbreviation), an lumens (lm or obese) is defined as an international standard candles lighting units in the three-dimensional arc angle adopted by the luminous flux, the whole area of spherical four ¦Ð R2, so that the luminous flux equivalent to a first-class candlelight issued by the flux of 1 / 4 ¦Ð , or a spherical ¦Ð 4, in accordance with the definition lumens know a cd point radiation source will ¦Ð 4 lumens, ¦Õ (lumens) = ¦Ð 4 I (candlelight), ¡÷ ¦¸ is the assumption that small three-dimensional arc angle, ¡÷ ¦¸ solid angle within Lumens ¡÷ ¦Õ, there ¡÷ I ¦Õ = ¡÷ ¦¸

A candlelight feet What is the meaning?
Answer: a candlelight feet, a distance that is the source candlelight (point source or non-point source) and a feet away and the plane orthogonal light illumination, the abbreviation for 1ftc (a lm/ft2, lumens / 2 feet) per square foot by the luminous flux for a reception at the lumens of illumination and 1ftc = 10.76 lux

A candlelight meters What is the meaning?
Answer: a candlelight meters is a distance from the light source candlelight (point source or non-point source) meters away with the plane orthogonal light illumination, as Döllekes (lux, have written lx), every square meter of the light flux received a lumens for the illuminance (lumens / m 2 )

A lux What is the meaning?
Answer: square meters by the luminous flux for a reception at the lumens of illumination

What is the meaning of illumination?
Answer: Illuminance (E) is defined as: being exposed as objects of the units accepted by the luminous flux, or by the light irradiation objects in the unit area per unit time, accepted by the photometric units in meters or feet candlelight candlelight (ftc)

Illumination and luminosity, distance between what?
Answer: illumination and lighting, the relationship between the distance is: E (illumination) = I (photometric) / r2 (from the square)

As the size and illumination of the factors?
A: As was the illumination of the light source and light intensity as well as the body and the distance between the light source, as with the body color, surface properties and surface area size irrelevant.