Sewing machine und optical telegraph: was sie gemeinsam haben

1. Schritt 1. Sewing machine — inspirierte — Kinematograph. Louis Lumière said he came up with the intermittent film feed while watching the fabric feed of a sewing machine.
2. Schritt 2. Kinematograph — hat als Teil — Lens. A lens.
3. Schritt 3. Lens — wird verwendet in — Optical telegraph. Signals were read through telescopes.

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