Cotton and boiler: what they have in common

1. Step 1. Cotton — is used in — Arkwright’s water frame. It spins cotton.
2. Step 2. Arkwright’s water frame — has part — Water wheel. Driven by water.
3. Step 3. Water wheel — is part of — Trip hammer. The shaft was turned by a water wheel.
4. Step 4. Trip hammer — evolved into — Steam hammer. The mechanization of forging.
5. Step 5. Steam hammer — has part — Boiler. A boiler supplies the steam.

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