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Scientists Have Slowed Light Down To An Embarrassing 38 Miles Per HourThe speed of light in a vacuum is the absolute speed limit ... You get some of this stuff in a glass, it will crawl up the ...
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Physicists “Slow Down Light” to Just 61 Kilometers per Hour Using Ultracold Quantum MatterIn everyday conditions, light moves at 299,792,458 meters per second in a vacuum, and its speed decreases slightly when passing through materials like glass or water. However, these reductions are ...
When light travels from air into glass it slows down because glass is more (optically) dense than air. This change in speed can cause the light to bend at the boundary between the two transparent ...
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