cm37 - S.MORRIS 2006 HISTORY OF THE ATOM HISTORY 460 BC...

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S.MORRIS 2006
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HISTORY OF THE ATOM HISTORY OF THE ATOM 460 BC Democritus develops the idea of atoms he pounded up materials in his pestle and mortar until he had reduced them to smaller and smaller particles which he called ATOMA ATOMA (greek for indivisible)
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HISTORY OF THE ATOM HISTORY OF THE ATOM 1808 John Dalton suggested that all matter was made up of tiny spheres that were able to bounce around with perfect elasticity and called them ATOMS ATOMS
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HISTORY OF THE ATOM HISTORY OF THE ATOM 1898 Joseph John Thompson found that atoms could sometimes eject a far smaller negative particle which he called an ELECTRON ELECTRON
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HISTORY OF THE ATOM HISTORY OF THE ATOM Thompson develops the idea that an atom was made up of electrons scattered unevenly within an elastic sphere surrounded by a soup of positive charge to balance the electron's charge 1904 like plums surrounded by pudding. PLUM PUDDING MODEL
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HISTORY OF THE ATOM 1910 Ernest Rutherford oversaw Geiger and Marsden carrying out his famous experiment. they fired Helium nuclei at a piece of
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cm37 - S.MORRIS 2006 HISTORY OF THE ATOM HISTORY 460 BC...

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