Electromagnetism also plays several crucial roles in modern technology: electrical energy production, transformation and distribution; light, heat, and sound production and detection; fiber optic and wireless communication; sensors; computation; electrolysis; electroplating; and mechanical motors and actuators.

Electromagnets are widely used in numerous applications, from motors and generators to medical imaging and scientific research, due to their versatile and controllable nature.

You use forms of electromagnetism everyday, from turning on a lamp, turning on a microwave, doing laundry. Motors in these devices are created with electric currents which are created from your power company using electromagnetism to produce electricity which travels through power lines into your home's power system, powering your house.

This text explores electromagnetic phenomena in modern applications, including wireless and optical communications, circuits, computer interconnects and peripherals, microwave communications and radar, antennas, sensors, micro-electromechanical systems, and power generation and transmission.