• Electromagnetic energy (EME), also known as electromagnetic radiation (EMR) or Electromagnetic Fields (EMF), is the energy stored in an electromagnetic field. It occurs naturally, with the earth, the sun, and the ionosphere are all natural sources of EME in our everyday lives.

    All forms of EME are collectively referred to as the electromagnetic spectrum. The properties of EME vary with wavelength or frequency and EME from different parts of the spectrum interacts with matter differently. For example, UV light interacts with matter differently to radiofrequency signals.

    The electromagnetic spectrum has been harnessed to create a wide range of technologies including radio communications, television, electric power, radar, microwave ovens, magnetic resonance imaging, toasters, cameras, lasers and X-ray machines.

    The electromagnetic spectrum diagram

    Mobile phone frequency 700MHz – 2600MHz               Source ARPANSA

    The word "radiation" often brings to mind radioactive materials and x-rays. However, radiofrequency EME does not behave like the radiation from radio active material or x-rays. Radiofrequency EME is transmitted by communications systems as radio waves - electromagnetic waves that have the capacity to transmit sound, music, speech, pictures and other data invisibly through the air.

    Further information on the Electromagnetic Spectrum is available from the Australian Radiation Protection and Nuclear Safety Agency (ARPANSA)