Bell and steam turbine: what they have in common

1. Step 1. Bell — uses — Casting. Casting.
2. Step 2. Casting — is used in — Cannon. Barrels were cast.
3. Step 3. Cannon — is part of — Ironclad. Artillery.
4. Step 4. Ironclad — evolved into — Aircraft carrier. The first aircraft carriers were converted from battleships and cruisers.
5. Step 5. Aircraft carrier — has part — Steam turbine. Turbines (powered by a reactor on nuclear carriers).

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