Taximeter und multistage rocket: was sie gemeinsam haben

1. Schritt 1. Taximeter — hat als Teil — Mechanical clock. It measures the time of the ride.
2. Schritt 2. Mechanical clock — entwickelte sich zu — Quartz clock. Quartz clocks replaced mechanical ones: a vibrating quartz crystal took the place of the pendulum and balance.
3. Schritt 3. Quartz clock — entwickelte sich zu — Atomuhr. The quartz oscillator is tuned to an atomic standard.
4. Schritt 4. Atomuhr — wird verwendet in — GPS (satellite navigation). The satellites carry atomic clocks; the position is calculated from signal arrival times.
5. Schritt 5. GPS (satellite navigation) — ist Teil von — Reusable rocket. Navigation during landing.
6. Schritt 6. Reusable rocket — entwickelte sich aus — Multistage rocket. The first stage returns.

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