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What keeps a train on the track?

BoreMeScience · explainer · Watch on YouTube

Fundamental physicsTransit, cities & urban planningMechanical & precision engineering

What it is

A short clip of Richard Feynman explaining how a train stays on its tracks, through the conical shape of wheels and how it handles curves without differentials.

Why Hacker News recommends it

HN links it as a great, surprising explanation whenever rail wheels, gauge or curves come up.

  • 1 people recommended it
  • 1 different months
  • 0 strong recommendations
  • first 2019, last 2022

What HN commenters said

  1. “Here's a great explanation by Richard Feynman”

    Explains how conical wheels self-steer on curves.

    frosted-flakes, 2020-06 · Recommendation · in “New slats make the Golden Gate Bridge sound like a David Lynch movie”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: richard feynman, trains, conical wheels, physics, railways

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