Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 27 - Think and Explain: 44

Answer

It works by color addition.

Work Step by Step

A color TV makes a black dot just by shutting off all the lights at that location. White light is produced by mixing red, blue, and green light in equal amounts. Any color in the visible spectrum can be produced by mixing the proper amounts of red, blue, and green light.
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