Refraction of light und gutenberg printing press: was sie gemeinsam haben

1. Schritt 1. Refraction of light — wird verwendet in — Lens. A lens focuses light by refraction.
2. Schritt 2. Lens — ist Teil von — Sextant. The sextant’s telescope.
3. Schritt 3. Sextant — ist Teil von — Sailing ship. The sextant and chronometer were a sailing ship’s navigation kit for finding latitude and longitude.
4. Schritt 4. Sailing ship — nutzt — Mercator projection. Navigating along straight rhumb lines.
5. Schritt 5. Mercator projection — nutzt — Gutenberg printing press. Maps were printed in large numbers.

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