Rocket interstage and boyle’s air pump: what they have in common

1. Step 1. Rocket interstage — is part of — Multistage rocket. It joins the stages and separates them with pyrotechnics.
2. Step 2. Multistage rocket — includes — Saturn V. A rocket.
3. Step 3. Saturn V — uses — Hydrogen. Hydrogen stages.
4. Step 4. Hydrogen — is material for — Bubble chamber. The working medium is superheated liquid hydrogen.
5. Step 5. Bubble chamber — has part — Piston. It releases pressure.
6. Step 6. Piston — is part of — Boyle’s air pump. A plunger.

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