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→Ionising Atoms
|[[File:GammaIonise.png|center|500px]]
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| style="height:20px; width:500px; text-align:center;" |When a [[Gamma Ray-ray|gamma -ray]] interacts with an [[atom]] the [[Gamma Ray-ray|gamma raygammarray]] is [[Absorb (Physics)|absorbed]] by an [[electron]] in the [[Outer Shell|outer shell]] causing the [[electron]] to escape '''ionising''' the [[atom]].
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===Ionising Radiation and Cancer===
: Exposure to '''ionising radiation''' is a [[Risk Factor|risk factor]] in [[cancer]] because '''ionising radiation''' can cause [[DNA]] [[molecule]]s to break. When the [[Cell (Biology)|cell]] tries to repair the [[DNA]] it can make mistakes called [[mutation]]s. If this [[mutation]] tells the [[Cell (Biology)|cell]] to replicate constantly then this becomes [[cancer]].