There was little change in the understanding of the atom until John Dalton (1766-1844), an English ... In 1913, Niels Bohr revised Rutherford's model by suggesting that the electrons orbited ...

Listen to the full series on BBC Sounds. Hans Geiger and Ernest Marsden tested the plum pudding model. They aimed beams of positively-charged particles at very thin gold foil. These particles ...