Zoetrope and turbine: what they have in common

1. Step 1. Zoetrope — evolved into — Cinema. Optical toys prepared the idea of cinema.
2. Step 2. Cinema — uses — Cinématographe. Cinema began with the cinématographe.
3. Step 3. Cinématographe — has part — Crank. The film was advanced by turning a handle.
4. Step 4. Crank — is part of — Sawmill. A crank turns the wheel’s rotation into the stroke of the saw.
5. Step 5. Sawmill — has part — Water wheel. Early sawmills were driven by water wheels.
6. Step 6. Water wheel — evolved into — Turbine. The water turbine evolved from the water wheel.

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