which material does light requires for its propogation
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Propagation of an Electromagnetic Wave
Mechanical waves, unlike electromagnetic waves, require the presence of a material medium in order to transport their energy from one location to another. Sound waves are examples of mechanical waves while light waves are examples of electromagnetic waves.
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A wiggle in space and time is called wave. ... Sound waves are mechanical waves. In order to propagate sound waves, a medium is necessary; whereas light waves are electromagnetic waves which didn't require any medium to propagate. Light wave can travel in vacuum also.
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