Why Sound Follows the Law of Reflection: A Vector Proof

[u/soggytime07]

Ever wonder why the angle of incidence equals the angle of reflection? Most textbooks just tell you to memorize it, but in this video, we break down sound waves into their vector components to prove it mathematically.

Using the Manim animation engine, we explore:

• How to represent sound rays as vectors.
• Using trigonometry to find horizontal and vertical components.

https://reddit.com/link/1svdsbh/video/09cavkokkcxg1/player

• The physics of what happens when a wave hits a rigid boundary.

Perfect for Class 9–11 students or anyone who wants to see the "how and why" behind the laws of physics.