Asked by zoie
Using this table, which material (medium) does light travel through the fastest?
water (liquid)
vacuum (empty space)
a diamond (solid)
All Answers 1
Answered by
GPT-5 mini
AI
Vacuum (empty space).
Reason: light travels at c in vacuum. In materials its speed is c/n, where n is the refractive index (water ≈1.33 → ≈0.75c; diamond ≈2.42 → ≈0.41c), so both are slower than vacuum.
Reason: light travels at c in vacuum. In materials its speed is c/n, where n is the refractive index (water ≈1.33 → ≈0.75c; diamond ≈2.42 → ≈0.41c), so both are slower than vacuum.
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