Basic Principles of Light Propagation

5 important questions on Basic Principles of Light Propagation

The inverse square law

Describes how the illuminance at a point can be calculated from the luminous intensity of a source towards a point

A lambertian radiator

An ideal form of an emitter that has a constant radiance or luminance independent of the directions of emission -> ideal diffuse emitter

Luminous intensity distribution

Distributed in all directions
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How to calculate luminous flux; according to ...

Luminance or illuminance

When is the luminance constant in any direction?

Under complete diffuse lighting

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