Rocket launch table and dewar flask: what they have in common

1. Step 1. Rocket launch table — is part of — Launch complex. Supports that hold the rocket until launch.
2. Step 2. Launch complex — is made of — Concrete. The launch table is concrete.
3. Step 3. Concrete — is material for — Maglev. The guideway is concrete.
4. Step 4. Maglev — evolved into — Hyperloop (concept). It develops the idea of magnetic levitation.
5. Step 5. Hyperloop (concept) — uses — Vacuum. A vacuum in the tube.
6. Step 6. Vacuum — is used in — Dewar flask. A vacuum.

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