Refraction of Light: Physics Diagram Explaining Snell’s Law #233188 (License: Personal Use)

This schematic shows a light ray traveling from air into water, bending toward the normal due to the higher optical density of water. The dashed vertical line represents the normal, while θ₁ and θ₂ denote the angles of incidence and refraction, respectively, essential for applying Snell’s Law (n₁ sin θ₁ = n₂ sin θ₂). The diagram is commonly used in optics education to illustrate wave behavior at media boundaries.

Used in educational web pages, physics textbooks, and online learning modules to explain Snell’s Law and optical refraction; matches user intent for understanding fundamental light behavior or preparing for exams.