Newcomen engine and bicycle: what they have in common

1. Step 1. Newcomen engine — has part — Piston. Atmospheric pressure moves the piston.
2. Step 2. Piston — is part of — Shock absorber. Inside, a piston moves in oil.
3. Step 3. Shock absorber — is part of — Suspension fork. A shock absorber.
4. Step 4. Suspension fork — is part of — Bicycle. On mountain bikes a suspension fork absorbs bumps.

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