small and easy question !! in any quantum system, harmonic oscillator, atom, or any other we know the electron can be found on a specific orbits or shells, and can't be found between them right? how does it go from a shell to another when it's excited for example? does it disappear from the one and appear in the next one? or it moves normally until it reaches the next shell like me when i go from my room to the house door (that's impossible as quantum says)? what then? how does it change it's position? lol !! that's magic !! Anyone can explain?