The design of EM devices include transformers, electric relays, radio/TV, telephones, electric motors, transmission lines, wave guides, antennas, optical fibers, radars and lasers.
- EM power in the form of microwaves is used to heat deep tissues.
- EM fields are used in the induction heaters for melting, forging, annealing, surface hardening and soldering operations. Dielectric heating equipment uses shortwaves to join or seal thin sheets of plastic materials.
- EM energy offers many new and exciting possibilities in agriculture. Example- It is used to change vegetable taste by reducing acidity.