radiowave, microwave, infra-red, ultra-violet, x-ray, gamma, wavelength, frequency, 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)

بواسطة

النمط البصري

إظهار الكل

إعدادات النشاط

لوحة الصدارة

تبديل القالب

استعادة الحفظ التلقائي: ؟