Top spindle and GPS (satellite navigation): what they have in common

1. Step 1. Top spindle — is part of — Spinning top. A rod for spinning it up.
2. Step 2. Spinning top — uses — Angular momentum. A top is stable while it spins.
3. Step 3. Angular momentum — is used in — Reaction wheel. Conservation of angular momentum.
4. Step 4. Reaction wheel — is part of — Artificial satellite. Attitude control.
5. Step 5. Artificial satellite — is part of — GPS (satellite navigation). A constellation of satellites.

Open Evothings