By Adam Birsic and Jared Bobeck

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Presentation transcript:

By Adam Birsic and Jared Bobeck Ernest Rutherford

Background Born August 30, 1871 Died October 19, 1937 He was a New Zealand-born British physicist who became known as the father of nuclear physics. Became director of the Cavendish Laboratory at Cambridge University in 1919. Ashes were buried in Westminster Abbey, London.

Rutherford/Planetary Model ://www.youtube.com/watch?v=aGqh6x3OnNU This is the model of the atom created by Rutherford. In 1909, Rutherford directed the Geiger-Marsden Experiment (Gold Foil) which suggested that J.J. Thomson’s “plum pudding model” was incorrect.

Rutherford/Planetary Model

The Atomic Theory His theory described the atom as having a central positive nucleus surrounded by negative orbiting electrons. It also suggested that most of the mass of the atom was contained in the small nucleus, and the rest of the atom was empty space. These findings were a result of the Gold Foil experiment.

The Gold Foil Experiment Involved the firing of radioactive particles through minutely thin metal foils. They were then detected by using screens coated with zinc sulfide (a scintillator). Although most particles passed straight through the foil approximately 1 in 8000 were deflected. This led to his Atomic Theory.

Gold Foil Experiment

The Proton In 1917, he was widely credited with first “splitting the atom” in nuclear reaction between nitrogen and alpha particles. Through this experiment, he discovered positively charged particles in the nucleus of the atom and named them “protons”.

Works Cited http://en.wikipedia.org/wiki/Ernest_Rutherford http://www.rsc.org/chemsoc/timeline/pages/1911.html