Neutralizing brushes and shaduf: what they have in common

1. Step 1. Neutralizing brushes — is part of — Electrostatic machine. Neutralizers.
2. Step 2. Electrostatic machine — uses — Friction. Friction.
3. Step 3. Friction — is used in — Rope. Twisted fibres hold each other by friction.
4. Step 4. Rope — is used in — Well. Water was raised with a bucket on a rope.
5. Step 5. Well — uses — Shaduf. Or with a well sweep.

Open Evothings