Shoe upper e heat pump: o que têm em comum

1. Passo 1. Shoe upper — faz parte de — Footwear. The upper blank.
2. Passo 2. Footwear — é feito de — Leather. Leather.
3. Passo 3. Leather — é material para — Piston. They were sealed with a leather cup.
4. Passo 4. Piston — faz parte de — Watt steam engine. Steam pushes the piston in the cylinder.
5. Passo 5. Watt steam engine — inspirou — Thermodynamics. Carnot wrote “Reflections on the Motive Power of Fire” trying to understand steam engines.
6. Passo 6. Thermodynamics — é utilizado em — Heat pump. A heat pump moves heat from cold to warm by spending work — by the laws of thermodynamics.

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