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Would the addition of water help you see the coin if lights traveled faster in water than in air?
Wiki User
ā 13y ago
No. The only effect would be that a pencil, a ruler, or a soda straw dipped into the water
would appear to bend toward you under the water, rather than away from you as it does
now.
Wiki User
ā 13y ago
Yes, light travels faster in water than in air, so adding water would likely improve visibility of the coin. Water slows the light less, reducing the bending of light rays, which can help make objects appear clearer and more visible in water compared to in air.
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