Zisterne und GPS (satellite navigation): was sie gemeinsam haben
- Schritt 1. Zisterne — ist hergestellt aus — Stone. Cisterns were cut into rock or lined with stone.
- Schritt 2. Stone — ist Material für — Interferometer. Michelson’s instrument stood on a stone slab.
- Schritt 3. Interferometer — inspirierte — Theory of relativity. The Michelson–Morley experiment found no ether.
- Schritt 4. Theory of relativity — wird verwendet in — GPS (satellite navigation). Corrections for the relativistic slowing of clocks.