Rutherford and the Gold Foil Experiment
- In 1804 John Dalton agreed with Democritus that matter was made up of tiny spherees that couldn't be broken up, but he reckoned that each element was made up of a different type of atom.
- Nearly 100 years later, J J Thomson discovered that electrons could be removed from atoms. So Dalton's teory wasn't quite righr. Thomson suggested that atoms were spheres of positive charge with negative electrons stuck in them like plums in a plum pudding.
- In 1909 Rutherford and Marsden tried firing a beam of alpha particles at thin gold foil…