Terme de Glossaire

The electromagnetic fields are everywhere present in our environment. They can occur naturally such as the field produced by the electric charges in clouds during an electric storm, or the magnetic field of the earth which gives the direction to magnetized needles. They can also be created by human activity involving the use of electricity, cell phones or televisions for example. The frequency of a field is expressed in Hertz (Hz). Some examples of field frequencies and their sources: - 0 Hertz: a static field produced by an electric storm (electric field), lodestone (magnetic field) - 50 Hertz field generated by most of the electrical installations, domestic current (High-speed trains such as the TGV, lighting, electric appliances, cable TV and high, medium and low voltage lines) - around 100 MHZ: FM radio: - 900 and 1800 MHz: GSM. It concerns radiation which is said to be non-ionizing (as opposed to X-rays for example, which we are subjected to during air travel, X-rays at the hospital etc.)

More on the website of the Belgian BioElectroMagnetic Group (BBEMG)