Limestone blocks und brille: was sie gemeinsam haben

1. Schritt 1. Limestone blocks — ist Teil von — Egyptian pyramid. Limestone and granite blocks of masonry.
2. Schritt 2. Egyptian pyramid — nutzt — Lever. Levers were used to move the blocks.
3. Schritt 3. Lever — wird verwendet in — Optical telegraph. The arms were moved by a system of levers and rods.
4. Schritt 4. Optical telegraph — nutzt — Telescope. Signals were read through a telescope.
5. Schritt 5. Telescope — entwickelte sich aus — Brille. The first telescopes were assembled by spectacle makers.

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