Advanced microscopes can distinguish individual atoms. This is relatively trivial if you have the correct setup. Search atomic force microscope and HOPG (highly ordered pyrolytic graphene).
This wasn’t the correct setup though to do that. Presumably the reason you can see a single atom is because there is only one present, ie if there was a second one next to it you wouldn’t necessarily be able to see the difference in the photograph.
This wasn’t the correct setup though to do that. Presumably the reason you can see a single atom is because there is only one present, ie if there was a second one next to it you wouldn’t necessarily be able to see the difference in the photograph.