ELECTRICITY & MAGNETISM WAVES & WAVE PHENOMENA PARTICLE PHYSICS A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site electromagnetic radiation Radiation, consisting of vibrating electric and magnetic fields, which propagates at the speed of light (300,000 km/s in a vacuum). Electromagnetic radiation may also be regarded as a stream of particles known as photons. Related entry    • electromagnetic spectrum Related categories    • ELECTRICITY AND MAGNETISM    • WAVES AND WAVE PHENOMENA    • PARTICLE PHYSICS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP