Question

What is primary lights in physics?

Answer 1

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Light Color Primaries (Red, Green, Blue)

Pigment Color Primaries (Cyan, Magenta, Yellow)

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Answer 2

The primary properties of visible light are intensity, propagation direction frequency or wavelength spectrum and polorization, while it's speed in a vacuum,299,792,458 meters per second,is one of the fundamental constants of nature