Optics: Refraction and Interference of Light
Why light bends, and where colors come from
0:59 · 720p · With AI narration and captions. This sample was made with the same system as this service.
Narration (full text)
Click a time to play from that scene.
Refraction & Interference
Let's look at refraction, where light bends, and interference, where light waves overlap.
Refraction
Light moves slower in water or glass than in air. So when it enters at an angle, it changes direction at the boundary. This is refraction.
A Straw That Looks Bent
A straw in water looks bent because light from underwater refracts at the surface.
A Prism Splits Colors
When white light passes through a prism, each color bends at a slightly different angle, so it splits into a rainbow-like band of colors.
Interference
When crests meet, the waves add up and get brighter. When a crest meets a trough, they cancel out and get darker. This is interference.
Soap Bubble Colors
Why are soap bubbles colorful? Light reflected from the front and back of the film overlaps and interferes.
Light Bends and Overlaps
When light's speed changes, it refracts, and when light waves overlap, they interfere.
Create 3D explainer videos like this sample from your documents and chat
Just attach product documents, drawings, or CAD data and tell the AI in chat what video you want. The AI plans the storyboard, builds the 3D scenes, and turns it into a video with narration and captions. You pay only for what you use (a rough guide is about 3,500 credits for a 1-minute video with 2 small revisions).
