Well shaft and boiler: what they have in common

1. Step 1. Well shaft — is part of — Well. A vertical shaft down to the aquifer.
2. Step 2. Well — uses — Windlass. The bucket was raised with a windlass.
3. Step 3. Windlass — uses — Crank. The handle of a windlass is a crank.
4. Step 4. Crank — is part of — Ice cream maker. A handle.
5. Step 5. Ice cream maker — uses — Latent heat. Ice with salt draws away heat.
6. Step 6. Latent heat — is used in — Boiler. Evaporation needs latent heat.

Open Evothings