Phosphor coating e Máquina analítica de Babbage: o que têm em comum

1. Passo 1. Phosphor coating — faz parte de — Lâmpada fluorescente. A coating that glows under UV.
2. Passo 2. Lâmpada fluorescente — é feito de — Mercury. Mercury.
3. Passo 3. Mercury — faz parte de — Hydrometer. Old hydrometers used mercury or lead shot as the weight to keep them upright.
4. Passo 4. Hydrometer — funciona como — Cream separator. Both rely on density: a separator removes the lighter cream, a hydrometer checks by density whether milk has been watered down.
5. Passo 5. Cream separator — tem como parte — Gear. A gear train spins up the bowl.
6. Passo 6. Gear — faz parte de — Máquina analítica de Babbage. Gears performed the calculations.

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