Feynman Explains How Tapered Train Wheels Stay on the Track
Christopher Sykes · Explainer · YouTube title: Feynman: How the train stays on the track FUN TO IMAGINE 7
Why it's here
HN people link it as Feynman's charming and clear explanation of why train wheels are tapered, whenever trains, bicycles or steering come up.
What it covers
A short clip from the 1983 BBC series Fun to Imagine in which Richard Feynman explains how a train stays on the track. He covers the geometry of tapered wheels that steer the train back toward the center of the rails.