Wooden bucket and camera: what they have in common

1. Step 1. Wooden bucket — is part of — Well. It scoops up water.
2. Step 2. Well — uses — Windlass. The bucket was raised with a windlass.
3. Step 3. Windlass — uses — Wheel. A windlass is a wheel and axle used as a simple machine.
4. Step 4. Wheel — is part of — Lunokhod. Wheels.
5. Step 5. Lunokhod — has part — Smartphone camera. TV cameras.
6. Step 6. Smartphone camera — evolved from — Camera. A smartphone camera keeps the layout of a camera: a lens forms an image on a light-sensitive surface.

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