Gamma+Decay

Gamma decay is when the unstable nucleus emits a burst of energy called a gamma wave.



Because the nucleus is only emitting a wave it remains unchanged afterwards.

Gamma waves are like light waves - they have **no mass at all**! Because Gamma waves have no mass they can:


 * Pass right through your skin and your body!
 * Be stopped by thick concrete or lead.

Quiz**
 * Summary**
 * [|Uses of radiation]

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