Windlass and smartphone: what they have in common

1. Step 1. Windlass — uses — Wheel. A windlass is a wheel and axle used as a simple machine.
2. Step 2. Wheel — is part of — Lunokhod. Wheels.
3. Step 3. Lunokhod — has part — Smartphone camera. TV cameras.
4. Step 4. Smartphone camera — is part of — Smartphone. One or more cameras.

Open Evothings