jan 9, 1932 - Model: His model was the quantum mechanical model of the atom. He bombarded beryllium atoms with alpha particles and an unknown radiation was produced. Experiment: He had a hypothesis and wanted to test it so he put a piece of beryllium in a vacuum chamber with some polonium. The polonium emitted alpha rays, which struck the beryllium after it was struck it emitted mysterious rays.
Added to timeline:
Date:
jan 9, 1932
Now
~ 94 years ago