Atomic+Theory+Information

http://www.universetoday.com/38169/john-daltons-atomic-model/

https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#safe=strict&q=chadwick+discovery+of+neutron+experiment http://dev.physicslab.org/Document.aspx?doctype=3&filename=AtomicNuclear_MillikanOilDrop.xml