تماشای ویدئو Specular and diffuse reflection 2 Geometric optics Physics Khan Academy از آی-ویدئو
Specular and Diffuse Reflection 2. Created by Sal Khan.
Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/reflection-refraction/v/refraction-and-snell-s-law?utm_source=YT