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===Meaning===
[[File:Prism.gif|right|300px|thumb|This [[prism]] splits white light into [[wave]]s of '''radiation''' with different colours.]]
'''Radiation''' is an [[Energy Transfer|energy transfer]] that spreads the [[energy]] by [[wave]]s starting from a [[Centre|central]] [[point]].
===About Radiation===
: Light is a '''radiation''' that can [[Energy Transfer|transfer energy]] from one [[Energy Store|energy store]] to another.
: Sound is a form of '''radiation''' that [[Energy Transfer|transfers energy]] by pressure waves through a [[solid]], [[liquid]] or [[gas]]eous [[medium]].