He published his ideas in 1803. This atomic model has changed over time. Scientists used the model to make predictions. Sometimes the results of their experiments were a surprise and they did not ...

In 1913, Niels Bohr revised Rutherford's model by suggesting that the electrons ... levels (at bigger distances from the nucleus). In time, they jump back down to a lower level releasing light ...

Photo: Niels Bohr's research notes for his new atomic theory Rutherford's find came from a very strange experience. Everyone at that time imagined ... properties. Over the years other ...