CCD sensor and boyle’s air pump: what they have in common

1. Step 1. CCD sensor — is part of — Digital camera. The first ones used CCDs.
2. Step 2. Digital camera — evolved from — Camera. A sensor instead of film.
3. Step 3. Camera — is part of — Bubble chamber. Photographing the tracks.
4. Step 4. Bubble chamber — has part — Piston. It releases pressure.
5. Step 5. Piston — is part of — Boyle’s air pump. A plunger.

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