>Back then scientists didn't have a model for what is inside an atom though Yes, they did: http://en.wikipedia.org/wiki/Bohr_model http://en.wikipedia.org/wik

>Back then scientists didn't have a model for what is inside an atom though Yes, they did: http://en.wikipedia.org/wiki/Bohr_model http://en.wikipedia.org/wiki/Bohr_model From 1913. Not a complete model, as we now know, but nonetheless, scientists did have a model of the atom 100 years ago.