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Does this look white to you?

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1,622 Questions Answered

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When you mix red and green, what do you get? White light is all of the colors, right? So, how do computer screens show you every wavelength of light? Or do they? Physics Girl investigates these questions.

Watch the video and finish the Think section to complete the lesson.


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TED-Ed Best of Web are exceptional, user-created lessons that are carefully selected by volunteer teachers and TED-Ed staff.

Meet The Creators

Video created by
Physics Girl
Lesson Plan created by
Emilie Soffe

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