Light Refraction Through a Rectangular Medium - Physics Diagram #233157 (License: Personal Use)

This black-and-white line diagram depicts a light ray entering a rectangular, hatched medium (e.g., glass or acrylic), bending toward the normal upon entry and away upon exit, resulting in a parallel emergent ray. The dashed line indicates the original path without refraction, highlighting the lateral displacement caused by the medium’s refractive index.

Used in physics textbooks, educational websites, and classroom slides to explain Snell’s Law, refraction, and optical path deviation. Matches user intent for learning or teaching basic geometric optics concepts.