The energy levels of an electron in a crystal can be determined by solving Schrödinger’s equation for a periodic potential and by studying changes to the electron energy structure as atoms are pushed ...The energy levels of an electron in a crystal can be determined by solving Schrödinger’s equation for a periodic potential and by studying changes to the electron energy structure as atoms are pushed together from a distance. The energy structure of a crystal is characterized by continuous energy bands and energy gaps. The ability of a solid to conduct electricity relies on the energy structure of the solid