Editing Ernest rutherford (section)

=== Discovery of the nucleus ===
In 1911, rutherford conducted the famous [[gold foil experiment]]. He bombarded thin gold foil with alpha particles and observed that most passed through, but a few were deflected.

This led to a revolutionary conclusion:
<blockquote>
"An atom's mass and positive charge are concentrated in a small central region – the [[nucleus]]."
</blockquote>

This contradicted the earlier [[plum pudding model]] and led to the development of the [[rutherford model]] of the atom.