Basically we smash stuff together and look at how it scatters or flies apart. I bring this up as this pertains to how much knowledge we have of the current situation. So when the experiment was done, the distribution suggested a much different model-very similar to the one we have day (small compact nucleus, orbiting electrons). Based on the model one could guess the distribution of scattered (deflected) particles. This was the Rutherford experiment where alpha particles were shot at thin gold foil. How do we know this? Back in the early 20th century, we calculated a model of the atom and did scattering experiments. To the best of our knowledge, the most fundamental particles are: We make our world significant by the courage of our questions and by the depth of our answers.
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