Hydroelectric power station and GPS (satellite navigation): what they have in common

1. Step 1. Hydroelectric power station — has part — Electric generator. Generators.
2. Step 2. Electric generator — includes — Solar panel. A solar panel also generates electricity — from light rather than rotation.
3. Step 3. Solar panel — is part of — Artificial satellite. Powering satellites.
4. Step 4. Artificial satellite — is part of — GPS (satellite navigation). A constellation of satellites.

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