Hook and eye e monitor: o que têm em comum

1. Passo 1. Hook and eye — é feito de — Bronze. Medieval fasteners were bronze.
2. Passo 2. Bronze — é material para — Heron’s aeolipile. The aeolipile is a bronze ball.
3. Passo 3. Heron’s aeolipile — inspirou — Vending machine. Heron described both a holy-water dispenser and the aeolipile; the dispenser is the prototype of the vending machine.
4. Passo 4. Vending machine — inclui — Fliperama. A coin-operated machine.
5. Passo 5. Fliperama — tem como parte — Tubo de raios catódicos. A CRT monitor.
6. Passo 6. Tubo de raios catódicos — faz parte de — Monitor. The first monitors were CRTs.

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