Knotted log line e refrigerator: o que têm em comum

1. Passo 1. Knotted log line — faz parte de — Chip log. A knotted rope.
2. Passo 2. Chip log — utiliza — Hourglass. The time of a speed measurement was taken with an hourglass.
3. Passo 3. Hourglass — funciona como — Water clock (clepsydra). The same principle of timing by outflow, with sand instead of water.
4. Passo 4. Water clock (clepsydra) — é feito de — Stone. The clepsydra from Karnak is a stone vessel.
5. Passo 5. Stone — é material para — Ice house. Ice houses were built of stone and sunk into the ground.
6. Passo 6. Ice house — evoluiu para — Refrigerator. The refrigerator replaced natural ice.

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