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===About Absorption Spectra===
: An '''absorption spectrum''' is made by passing [[White Light|white light]] through a [[material]] or [[reflection|reflecting]] it off a [[material]] then sending it through a [[Prism (Physics)|prism]] to separate the [[colour]]s.
: The [[spectrum]] of [[White Light|white light]] is a continuous change of [[colour]]s with all [[wavelength]]s having the same [[intensity]].
: An '''absorption spectrum''' is a set of specific [[wavelength]]s with a low [[intensity]]. This appears as dark lines of of missing [[colour]] from the normal [[spectrum]] made by [[White Light|white light]].