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Waves & Optics · refraction

Critical Angle

Gives the critical angle for light moving from higher to lower refractive index.

sin θ_c = n₂ / n₁

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Variables

θ_c
critical anglerad
n₁
higher refractive index
n₂
lower refractive index

Conditions / notes

Requires n₁ > n₂.

Reference details

Subject
Waves & Optics
Topic
refraction
Plain text
sin(theta_c) = n2 / n1

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