Davy lamp and bicycle: what they have in common

1. Step 1. Davy lamp — is used in — Coal mine. Protection against methane explosions.
2. Step 2. Coal mine — is used in — Newcomen engine. Pumping water out of mines.
3. Step 3. Newcomen engine — has part — Piston. Atmospheric pressure moves the piston.
4. Step 4. Piston — is part of — Shock absorber. Inside, a piston moves in oil.
5. Step 5. Shock absorber — is part of — Suspension fork. A shock absorber.
6. Step 6. Suspension fork — is part of — Bicycle. On mountain bikes a suspension fork absorbs bumps.

Open Evothings