CPU cooler and steam locomotive: what they have in common

1. Step 1. CPU cooler — has part — Heat sink. A heat sink.
2. Step 2. Heat sink — uses — Heat transfer. Heat dissipation.
3. Step 3. Heat transfer — is used in — Fire-tube boiler. A larger heating surface.
4. Step 4. Fire-tube boiler — is part of — Stephenson’s Rocket. A multi-tube boiler.
5. Step 5. Stephenson’s Rocket — is a kind of — Steam locomotive. A steam locomotive.

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