Knowledge base

Mean Spherical Candlepower (MSCP)

Mean Spherical Candlepower (MSCP) is a measure of the average luminous intensity of a light source in all directions (spherical). It is...

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Hue

Hue (Tint) refers to the basic color hue of an object or light, such as red, blue, green, or yellow. It is...

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Footcandle (fc)

Footcandle (fc) is a unit of illuminance , which indicates how much light a surface receives. 1 footcandle = 1 lumen per...

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Wien's Law

Wien's law of displacement describes the relationship between the temperature of a black body and the wavelength at which it emits the...

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Uniform Chromaticity Scale Diagram (UCS)

The Uniform Chromaticity Scale Diagram (UCS) is a modified version of the CIE 1931 chromaticity diagram , designed to improve perceptual uniformity....

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Tyndall effect

The Tyndall effect is the phenomenon whereby light is scattered by small particles in a colloidal solution or suspension . This effect...

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Mie scattering

Mie scattering is a type of light scattering that occurs when light interacts with particles approximately equal to or larger than the...

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Rayleigh scattering

Rayleigh scattering is a physical phenomenon in which light (or other electromagnetic radiation) is scattered by particles much smaller than the wavelength...

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Amount of light (luminous energy, Q)

Luminous quantity (Q) is a measure of the total light emitted from a light source over a given period. It is the...

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Nit (nt)

The nit (abbreviated nt) is a unit of luminance , which describes the amount of light per unit area. It is equal...

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Lighting Effectiveness Factor (LEF)

The Lighting Effectiveness Factor (LEF) is a measure of the efficiency and effectiveness of a lighting system , taking into account the...

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Lighting Cooling Index (LCI)

The Lighting Cooling Index (LCI) is a measure of the coolness of a light source. This index helps determine the color temperature...

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