how do projectors make the color black on white screens?
In: Technology
To add to the existing answers: they make some laser projector screens now that have special coatings/structures on them to only reflect light from one direction. Laser projectors sit underneath and directly in front of the screen, and the screen is designed so it only reflects light up from the bottom. Light coming from the side like from a window gets absorbed so it doesn’t brighten the screen.
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