Electromagnetic radiation refers to the transfer of all forms of radiation through space by electromagnetic waves.
- Electromagnetic radiation includes gamma rays, ultraviolet (UV), infrared (IR), X-rays, and radio waves, as well as visible light.
- Detached from its source, electromagnetic radiation (EM radiation), is transported by electromagnetic waves (or their quanta, photons) and propagates through empty space at the speed of light.
- Man-made technologies that produce electromagnetic radiation include radio and TV transmitters, radar, MRI scanners, microwave ovens, computer screens, mobile phones, all types of lights and lamps, electric blankets, electric bar heaters, lasers and x-ray machines.