Illuminance vs Luminance

It is sometimes worthwhile to understand how various metrics related to the measurement of light intensity work. Two of them are illuminance and luminance. They can sound really mundane and fool the subject into believing that both are actually the same thing. However, they are not. As a matter of fact, they are quite different.

Illuminance is the measure of light incident on a surface. Whereas, luminance is a measure of light that is either reflected or emitted by a body, such as glass, road, sun, moon or stars.

Difference Between Luminance and Illuminance

Posted on by Last updated on: September 4, 2012 Luminance vs Illuminance Luminance and illuminance are two very important concepts discussed in physics. Luminance is the amount of light energy that is produced by a surface or an object. Illuminance is the amount of light energy incident on a given surface.

Difference Between Brightness and Luminosity

Posted on by Last updated on: September 5, 2011 Brightness vs Luminosity Brightness and luminosity are two very important concepts of light and radiation. There are tremendous amounts of applications of brightness and luminosity in fields such as astronomy, physics, astrophysics, cosmology, agriculture, meteorology and even photography.

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