Zirkel und refrigerator: was sie gemeinsam haben

1. Schritt 1. Zirkel — wird verwendet in — Euclidean geometry. Constructions with compass and straightedge.
2. Schritt 2. Euclidean geometry — wird verwendet in — Sundial. The scale is marked by the angle of the shadow.
3. Schritt 3. Sundial — ist hergestellt aus — Stone. Sundials were hewn from stone.
4. Schritt 4. Stone — ist Material für — Ice house. Ice houses were built of stone and sunk into the ground.
5. Schritt 5. Ice house — entwickelte sich zu — Refrigerator. The refrigerator replaced natural ice.

Evothings öffnen