(Phys.org)—In a normal rainbow, red is always on "top" while violet is on the "bottom." This is true whether the rainbow is created by a glass prism or by water droplets in the sky, and is due to the ...
Great question, Desiree. Let me start with a story about the scientist Isaac Newton. About 350 years ago, he was thinking a lot about light, and what it is made of. He held a prism up to the light and ...
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