Samovar chimney tube and railway track: what they have in common

1. Step 1. Samovar chimney tube — is part of — Samovar. A pipe with coals inside the body.
2. Step 2. Samovar — uses — Heat transfer. A pipe inside the water.
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.
6. Step 6. Steam locomotive — uses — Railway track. It runs on rails.

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