Gas block and particle accelerator: what they have in common

1. Step 1. Gas block — is part of — Assault rifle. It bleeds powder gases onto the piston.
2. Step 2. Assault rifle — has part — Spring. A return spring.
3. Step 3. Spring — is part of — Pinball. A plunger.
4. Step 4. Pinball — has part — Electromagnet. Flippers are solenoids.
5. Step 5. Electromagnet — is used in — Particle accelerator. Bending magnets.

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