Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. In other words, EM waves are composed of oscillating magnetic and electric fields.
Properties of electromagnetic waves:
- EM waves are composed of oscillating electric and magnetic fields at right angles to each other and both are perpendicular to the direction of propogation.
- They travel with a constant velocity of 3×108m/s in vaccum.
- They are not deflected by an electric and magnetic field.
- They are transverse waves which can show interference and diffraction and may be polarised
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