Exercise bike and heron’s aeolipile: what they have in common

1. Step 1. Exercise bike — has part — Flywheel. A flywheel.
2. Step 2. Flywheel — is part of — Internal combustion engine. The flywheel smooths out the engine’s strokes.
3. Step 3. Internal combustion engine — has part — Turbocharger. Forced induction.
4. Step 4. Turbocharger — has part — Turbine. A turbine in the exhaust.
5. Step 5. Turbine — evolved from — Heron’s aeolipile. The aeolipile is the oldest ancestor of the steam turbine.

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