South-pointing chariot
device · 250 · Ancient world
A Chinese cart with a differential gear that keeps its figure pointing one way.
What it is made of
- Differential — has part. A differential gear.
- Gear — has part. A gear train keeps the direction.
Principles and materials it uses
- Wood — is made of. The chariot is wooden.
What it is a kind of
- Cart — is a kind of. A cart.