Thursday, September 29, 2011

RUTHERFORD ATOMIC MODEL


Ernest Rutherford was born at New Zealand. He conducted research work with J.J.Thomson in 1895. Prof. Rutherford was awarded the Nobel Prize in 1908 for his researches in the field f atomic physics. Rutherford performed an experiment in order to explain the arrangement of sub-atomic particles in an atom. The experiment is known as alpha rays scattering experiment.
               It is based on alpha scattering particles. Having known that atom contains electrons and positive ion, Rutherford proceeded to perform this experiment to know as to how and where these were located in the atom. In 1911, Rutherford and Marsden performed their historic alpha particles scattering experiment using the apparatus. They directed stream of highly energetic alpha particles from radioactive source against a thin gold foil provided with a circular fluorescent zinc sulphide screen around it. Whenever alpha particles struck the screen, a tiny flash of light was produced at that point.

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