What is an elecromagnetic wave, mention its properties?
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Electromagnetic waves are composed of oscillating electric and magnetic fields at right angles to each other and both are perpendicular to the direction of propagation of the wave. Electromagnetic waves differ in wavelength (or frequency).
Electromagnetic radiation can travel through empty space. Most other types of waves must travel through some sort of substance.
The speed of light is always a constant.
Wavelengths are measured between the distances of either crests or troughs. It is usually characterized by the Greek symbol λ.
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Electromagnetic radiation can travel through empty space. Most other types of waves must travel through some sort of substance.
The speed of light is always a constant.
Wavelengths are measured between the distances of either crests or troughs. It is usually characterized by the Greek symbol λ.
.
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