Snell's Law in Optics

Snell's Law describes the refraction of light when it passes from one medium to another:

Formula:

$n$₁ sin(θ₁) = n₂ sin(θ₂)

where:

• n1 and n2 are the refractive indices of the two media.
• θ₁ is the angle of incidence (angle between the incident ray and the normal).
• θ₂ is the angle of refraction (angle between the refracted ray and the normal).

This law helps determine how light bends as it moves from one material to another with a different refractive index.