You might see this trick going viral recently. How does the mirror know what’s behind the paper?? What’s happening?! We can explain!
[Video Description: Barbara, a red-haired white woman wearing a black long-sleeve shirt, stands in the foreground in front of a hallway. In the background, there are various plants and plant art by the white walls.
03:33:14: A diagram on the right shows a piece of paper (white squiggly line) on a mirror (blue line) with an object (orange ball) placed on the paper. Pink dashed lines show the path of light (from the object to the mirror to the eye). Gray dashed line shows the mirrored image as a result of light reflection.
03:22:17: A full-screen image: This video is sponsored by RIT/NTID Regional STEM Center. Below is a logo of RIT on the left with National Technical Institute for the Deaf on the right.]
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