Quantum mechanics and screw press: what they have in common

1. Step 1. Quantum mechanics — is used in — Superfluidity. A quantum phenomenon.
2. Step 2. Superfluidity — uses — Helium. Liquid helium.
3. Step 3. Helium — is used in — Airship. After the Hindenburg — helium.
4. Step 4. Airship — has part — Propeller. Air propellers.
5. Step 5. Propeller — uses — Screw. A propeller “screws” itself into the water, like an Archimedes’ screw.
6. Step 6. Screw — is used in — Screw press. The force is produced by turning a screw.

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