Snell's Law ·
Light Bends, Sines Stay Linked
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seel
.com · n₁ sin θ₁ = n₂ sin θ₂ · Fermat's least-time path
θ₁
30°
· θ₂
22°
n₁
1.00
· n₂
1.33
Stage
interface set
Incident ray
Refracted ray
Reflected / TIR
Normal · angle arc
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