Research topics below this in the hierarchy
- Electric meters
- Electric apparatus and materials. Electric circuits. Electric networks
- Production of electric energy or power. Powerplants. Central stations
- Production of electricity by direct energy conversion
- Distribution or transmission of electric power
- Applications of electric power
- Electric lighting
- Electric heating
- Telecommunication
- Electronics
- Nuclear engineering. Atomic power
- Dynamoelectric machinery and auxiliaries. Including generators, motors, transformers
- Electrical appliances