Vacuum cleaner and boyle’s air pump: what they have in common

1. Step 1. Vacuum cleaner — has part — Impeller. An impeller creates the suction.
2. Step 2. Impeller — is part of — Turbine. The bladed wheel is the turbine’s rotor.
3. Step 3. Turbine — uses — Torque. The flow creates torque.
4. Step 4. Torque — is used in — Rack and pinion. The rotation of the pinion becomes the travel of the rack.
5. Step 5. Rack and pinion — is part of — Boyle’s air pump. A rack and pinion moves the piston.

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