The Atomic Bomb
![](Images/TAN.gif)
![Chain reaction in nuclear fission](Images/chainreaction.jpg)
http://www.atomicarchive.com/Fission/Images/chainreaction.jpg
- The nuclear fission creates a chain reaction
where exponentially more fission can occur
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![littleboy, a gun-type bomb](Images/littleboy.jpg)
http://www.atomicarchive.com/Fission/Images/littleboy.jpg
- This is a gun-type bomb. It fires a mass of
Uranium 235 into another, creating critical mass.
This is the mass for spontaneous nuclear fission to
occur.
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![fatman, an implosion-type bomb](Images/fatman.jpg)
http://www.atomicarchive.com/Fission/Images/fatman.jpg
- A gun-type bomb would not work for Plutonium and
so the implosion type bomb was created. Explosive
charges compress a sphere of Plutonium so that a
chain reaction can occur.
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