With prime colors blue and red makes violet, but when light is split with a prism it makes secondary colors between prime ones, except violet is on the very end and not in contact with red light, only blue. Why is this?
In: Physics
a violet from the screen and a violet in physics (say a violet laser) are different. one is a mixture of red and blue wavelengths, one is a single wavelength at violet.
You see them as same colors, because our eyes are bad. Eyes only see three colors, but they have overlapping color regions. it is the relative weight of the eye receptors that will make your color impression. The single wavelength violet will activate the red cells and the blue cells in a specific ratio. The screen light aims to imidates this ratio by providing red and blue light such that your eye gets activated by the same ratio.
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