Soap und mechanical clock: was sie gemeinsam haben

1. Schritt 1. Soap — nutzt — Lime. The alkali for soapmaking was obtained from ash and lime.
2. Schritt 2. Lime — ist Material für — Zisterne. The walls were coated with lime plaster against leaks.
3. Schritt 3. Zisterne — ist Teil von — Aquädukt. Distribution reservoirs.
4. Schritt 4. Aquädukt — nutzt — Gravity flow. Water flows down a gradient without pumps.
5. Schritt 5. Gravity flow — wird verwendet in — Water clock (clepsydra). Water flows out at a constant rate under gravity.
6. Schritt 6. Water clock (clepsydra) — entwickelte sich zu — Mechanical clock. Mechanical clocks replaced water clocks, swapping the flow of water for an escapement.

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