BBC Bitesize A simple model of an atom shows a nucleus orbited by a number of electrons In 1803, John Dalton's atomic theory brought them into scientific view, but the Manchester scientist was ...

J.J. Thomson — a professor of experimental physics at the University of Cambridge, who in 1897 discovered the electron and in 1904 proposed a model of the atom — was the first person to be ...

Rutherford made a series of discoveries about the nature of atoms and, working with colleagues Hans Geiger and Ernest Marsden, presented a planetary model of the atom in 1911. In it, he laid out how ...