Hair dryer and transformer: what they have in common

1. Step 1. Hair dryer — has part — Impeller. An impeller on the motor shaft pushes air through the heater.
2. Step 2. Impeller — is part of — Turbine. The bladed wheel is the turbine’s rotor.
3. Step 3. Turbine — includes — Steam turbine. A kind of turbine.
4. Step 4. Steam turbine — is part of — Nuclear power plant. Steam turns the turbines — as at a thermal station.
5. Step 5. Nuclear power plant — has part — Transformer. Transformers step up the voltage so the plant's power can travel far.

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