I wasn't sure if I could ask this question in the other forum so I am posting it here. This is simply a qualitative question. I am taking an advanced Chemistry course that is all about quantum mechanics and some molecular physics. We were talking about the probability density of Psi. I was always under the impression that the graph of this shows the probability of finding a particle at some energy in some state. But my professor said something about it tells all the places that the particle can be in that state. Then he said that (using the example of a particle in a box), a particle can get out regardless of its energy sometimes because it goes through different dimensions beyond the normal 3 or 4 we have. I don't know, but I have never heard about particles flying through different dimensions before. Is it possible he explained it wrong or I heard wrong? I know for a fact he mentioned particles going through an 11th dimension but maybe he was talking about something else? Quantum Mechanics doesn't really predict this does it?