Human hair strand and GPS (satellite navigation): what they have in common

1. Step 1. Human hair strand — is part of — Hygrometer. The length changes with humidity.
2. Step 2. Hygrometer — is part of — Weather station. A hygrometer.
3. Step 3. Weather station — is used in — Weather forecast. Observations.
4. Step 4. Weather forecast — uses — Weather satellite. Satellites.
5. Step 5. Weather satellite — is a kind of — Artificial satellite. A satellite.
6. Step 6. Artificial satellite — is part of — GPS (satellite navigation). A constellation of satellites.

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