GPS tracking and heat pump: what they have in common
- Step 1. GPS tracking — uses — GPS (satellite navigation). GPS.
- Step 2. GPS (satellite navigation) — has part — Artificial satellite. A constellation of satellites.
- Step 3. Artificial satellite — has part — Solar panel. Powering satellites.
- Step 4. Solar panel — is used in — Energy-efficient house. Solar energy.
- Step 5. Energy-efficient house — uses — Heat pump. Heating.