Voltaic pile e refrigerator: o que têm em comum

1. Passo 1. Voltaic pile — evoluiu para — Lead–acid battery. Planté’s battery developed the idea of a chemical current source by making it rechargeable.
2. Passo 2. Lead–acid battery — faz parte de — Uninterruptible power supply. A battery.
3. Passo 3. Uninterruptible power supply — faz parte de — Centro de dados. Backup power.
4. Passo 4. Centro de dados — tem como parte — Ar-condicionado. Cooling.
5. Passo 5. Ar-condicionado — utiliza — Heat pump. An air conditioner is a heat pump that carries heat out of the room.
6. Passo 6. Heat pump — funciona como — Refrigerator. A heat pump is a refrigerator that heats the house.

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