How Light Works | HowStuffWorks
https://science.howstuffworks.com/light.htm
WEBHow Light Works. NEXT PAGE. By: William Harris & Craig Freudenrich, Ph.D. As a citizen of sunny Earth, it's hard not to take light for granted. In this article, we salute you, light, for a lightless world would be a gloomy place indeed. Frank Krahmer/Getty Images. Light is at once both obvious and mysterious.
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