Hovercraft and joystick: what they have in common
- Step 1. Hovercraft — has part — Propeller. Air propellers.
- Step 2. Propeller — is part of — Turboprop. A propeller.
- Step 3. Turboprop — is made of — Nickel. The turbine blades are nickel alloys.
- Step 4. Nickel — is material for — Potentiometer. The resistance wire is a nickel alloy.
- Step 5. Potentiometer — is used in — Joystick. Position is read with potentiometers.