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China: Refraction of Light By Lens
Fushun, China - September 02, 2024
Two laser pointers were attached to the blackboard, and an elderly person demonstrated the effects of concave and convex lenses on light using both reading glasses and bifocals.
This footage was filmed by Mr. Chu, in Fushun, Fushun, Liaoning, on September 2, 2024.
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