How do projectors and screens show the color black if black is the absence of light?

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How do projectors and screens show the color black if black is the absence of light?

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Anonymous 0 Comments

What colour is the whiteboard you’re projecting on? White. What colour is the black parts of the picture you’re projecting onto it? Exact same colour. Only the white parts of the picture are brighter.

That’s why you have to turn the lights off and close the curtains for a good picture.

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