RUTHERFORD'S GOLD FOIL EXPERIMENT.

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ERNEST RUTHERFORD

GOLD FOIL EXPERIMENT

1909 - Fired positivly charged particles at an extremely thin sheet of gold.

They expected postive particles to be delected because of previous work - the 'plum pudding'

Most of the particles passed straight throough the gold, with a small number deflected.

This famous experiment disproved the 'plum pudding' model'

This led to Rutherford's new idea - the nuclear atom: in effect he changed chemistry.

It described how nucleus is at centre surrounded by negative electrons.

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