Incandescent light bulb e piston pump: o que têm em comum

1. Passo 1. Incandescent light bulb — utiliza — Vacuum. The bulb was evacuated so the filament would not burn out.
2. Passo 2. Vacuum — é utilizado em — Newcomen engine. Condensing the steam creates a vacuum under the piston.
3. Passo 3. Newcomen engine — tem como parte — Piston pump. The beam drove a mine pump.

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