Electric guitar and archimedes’ screw: what they have in common

1. Step 1. Electric guitar — has part — Potentiometer. The volume and tone knobs on an electric guitar are potentiometers.
2. Step 2. Potentiometer — is made of — Nickel. The resistance wire is a nickel alloy.
3. Step 3. Nickel — is material for — Turboprop. The turbine blades are nickel alloys.
4. Step 4. Turboprop — has part — Propeller. A propeller.
5. Step 5. Propeller — evolved from — Archimedes’ screw. The first propellers by Smith and Ericsson were a variation on the Archimedes’ screw.

Open Evothings