Let's say that there's a box of height, h, length, l, and width, w, and within the box there's a proton. Thus it's certain that the proton would be inside the box. A slide is then put halfway along the length of the box. Thus the proability that the proton is in one side of the box is 0.5. What would the wave function of these two systems be and how would they change with time? Furthermore say the slide is put xl along the length of the box where x is greater than 0 but smaller than 1 what would the wave function of that system be? If possible could references to useful paper please be given.