👉 In physics, a "headspace" is a region of a substance's electronic structure that has no significant contribution to its electronic configuration. In other words, it is an area where electrons are located in such a way that they do not interact with each other or their environment. The term "headspace" is often used in the context of spectroscopy and crystallography, especially when working with materials with high symmetry structures like crystals. It refers to the region around a material's surface where
