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2024-09-20 15:25:53
in reply to nevent1q…j3s2

Nick on Nostr: The reflection from glass arises in a slightly different way. Glass is a dielectric, ...

The reflection from glass arises in a slightly different way. Glass is a dielectric, which means when light travels in the material it causes the atoms to sort of stretch a bit, and this interaction between the material and light causes the speed of light in the material to be slower. When light crosses the boundary between two materials with different speeds of light, the beam of light will bend (refraction) and some of it will be reflected back (similar to a mirror). This is the same reason you can see reflections at the surface of water (another dielectric).
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