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A light wave consists of energy in the form of an electric filed and a magnetic field. The electric and magnetic fields vibrate at right angles (that is, at angles which measure 90 degrees) to the direction in which the light wave is moving. Light has both the electric field and the magnetic field.his is because unlike other types of waves, such as sound waves, water wave â¦ s, etc., light waves do not need a medium to travel through.
Alternating magnetic and electric fields can propagate according to Maxwell, and there is no reason to believe they need any medium (except maybe analogy with sound). allow me to add to this answer. the previous writer tried describing this in how light may travel as a wave through space, but lets remember that electromagnetic radiation, which is light, has a duel nature as both a wave and a particle either called photons or quanta. photons which are particles can flow through space just ...