Duralumin and electrical grid: what they have in common

1. Step 1. Duralumin — is material for — Airship. The frames of zeppelins.
2. Step 2. Airship — uses — Helium. After the Hindenburg — helium.
3. Step 3. Helium — is material for — Large Hadron Collider. It is cooled with superfluid helium.
4. Step 4. Large Hadron Collider — uses — Data centre. A grid for processing data.
5. Step 5. Data centre — uses — Electrical grid. Power.

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