http://en.wikipedia.org/wiki/Atomic_nucleus [2]
http://en.wikipedia.org/wiki/Nuclear_weapon [3]
http://www.3rd1000.com/history/nuclear.htm [4]
http://hyperphysics.phy-astr.gsu.edu/hbase/nuclear/nucuni.html [5]
http://www.nuffieldfoundation.org/practical-physics/developing-model-ato... [6]
http://chemistry.mtu.edu/~pcharles/SCIHISTORY/08nuclearatom.html [7]
Links
[1] https://hootsgo.org/?q=node/6432
[2] http://en.wikipedia.org/wiki/Atomic_nucleus
[3] http://en.wikipedia.org/wiki/Nuclear_weapon
[4] http://www.3rd1000.com/history/nuclear.htm
[5] http://hyperphysics.phy-astr.gsu.edu/hbase/nuclear/nucuni.html
[6] http://www.nuffieldfoundation.org/practical-physics/developing-model-atom-nuclear-atom
[7] http://chemistry.mtu.edu/~pcharles/SCIHISTORY/08nuclearatom.html