Color Black Projector Physics

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How Does a Movie Projector Show the Color Black?

Summary

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50% Informative

Rhett Allain: You can project all colors from a video projector, but can you project the color black? How does that work? There's some fun physics here, so let's get into it.

Our brains interpret different wavelengths of the visible spectrum as different colors.

Our eyes are sensitive to only red, green, and blue wavelengths.

So when Darth Vader makes his appearance in the original Star Wars, striding through Princess Leia’s spaceship? That’s right, it’s just a Vader -shaped hole in the projected image. The lit-up areas around him cause our eyes to see the contrast as a deep black. There are lights reflecting off his thermoplastic armor too, adding to the sense of something being there. It kinda gives new meaning to joining the dark side, right?.

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informal

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English

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not offensive

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not hateful