radiowave, microwave, infra-red, ultra-violet, x-ray, gamma, wavelength, is reflected by the ionosphere , TV & radio, microwave ovens, mobile, wifi, heating, remote controls, fibre optics, night vission, sunbeds, bank note anti-forgery, diagnose broken bones, CT scans, sterilise food in tins and surgical equipment, radiotherapy, all are carrier waves used in communication, all are ionising (cancer causing).

Tauler de classificació

Estil visual

Opcions

Canvia de fonament

Restaurar desada automàtica: ?