Inner metal foil lining e railway track: o que têm em comum

1. Passo 1. Inner metal foil lining — faz parte de — Leyden jar. Foil or water inside.
2. Passo 2. Leyden jar — evoluiu para — Capacitor. The Leyden jar was the first capacitor.
3. Passo 3. Capacitor — é feito de — Tin. The plates are made of tin foil.
4. Passo 4. Tin — é material para — Model railway. The first models were tinplate.
5. Passo 5. Model railway — utiliza — Railway track. It runs on rails.

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