Question #2cf17
1 Answer
The source that produce them and methods of their detection are different, but they have the following common properties
Explanation:
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Electromagnetic waves are propagated by oscillating electric and magnetic fields oscillating at right angles to each other.
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Electromagnetic waves travel with a constant velocity of about
#3# x#10^8# m/s in vacuum. -
Electromagnetic waves are not deflected by electric or magnetic fields.
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Electromagnetic waves can show interference or diffraction.
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Electromagnetic waves may be polarized and hence show transverse nature.
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The wavelength (
#lamda# ) and the frequency (#nu# ) of electromagnetic wave is related as
#c = nulamda = omega/k# -
Electromagnetic radiation can travel through empty space. Most other types of waves must travel through some sort of a material substance. For example, sound waves need either a gas, solid, or liquid to pass through in order to be heard.
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The speed of light (and other EM waves) is always a constant. (Speed of light in vacuum :
#2.99792458# x#10^8# m/s) -
Wavelengths are measured between the distances of either crests or troughs. It is usually characterised by the Greek symbol
#lamda# .
