Video duration: 4467 seconds
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Have you ever wondered why we see rainbows, or what makes the sky blue? Walter Lewin, an engaging speaker and physics professor at the Massachusetts Institute of Technology, sheds light on everyday phenomena by explaining them in simple terms. Don't miss his exciting demonstrations, including creating a rainbow right in the lecture hall.
Video duration: 117 seconds
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Poppin Hyun Joon teaching some students how to slide and glide..he pretty much just shows the difference between Sliding and Gliding
(sorry the vid is cut off =S)