Hi, I am trying to demonstrate the relation between quantization of energy and wavelengths in a confined box for high school chemistry students. I am following an approach found in Atkins' "Chemical Principles". Anyways, its quite understandable, but I get the feeling maybe the box isn't actually what I think it is. I've been thinking of the box as the energy level (shell). But is it actually the orbital? Or something else entirely? Thanks.