Emission is the energy emitted by an emitter that appears as immission at the point of impact. In general, emissions can be radiation, thermal effects such as the Edison effect, environmental pollution or sound.
In the context dealt with here, it is about electromagnetic radiation in the low- frequency and high-frequency range. This includes all electromagnetic fields occurring in the high and low voltage range, but also radio waves from transmitters of radio and television, mobile radio, radio LANs, baby monitors and microwave ovens, emissions from lighting fixtures, sound emissions and emissions from laser light. As compromising emissions affect information security, electronic devices, especially monitors, generate electromagnetic radiation that can be received and analyzed.
The emission issue has increasingly arisen in connection with exposure to radio waves from cell phones and base stations, and has contributed to binding European emission standards and the limits they set.