Absolute zero and diesel engine: what they have in common

1. Step 1. Absolute zero — uses — Thermodynamics. The thermodynamic scale.
2. Step 2. Thermodynamics — was inspired by — Watt steam engine. Carnot wrote “Reflections on the Motive Power of Fire” trying to understand steam engines.
3. Step 3. Watt steam engine — evolved into — Tractor. The first tractors were steam-powered.
4. Step 4. Tractor — has part — Diesel engine. A diesel.

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