Abstract

The paper discusses the application of the previously formulated principle of commensurability of conserved quantities to the classifications of polymorphic transformations of crystalline substances under the influence of external factors on these substances (temperature, pressure, magnetic field, etc.). To describe the crystal structure of a substance, it is more productive to think of electrons as localized entities, rather than wave packets. A physical model is proposed to explain, accepted in the scientific literature, the requirement of coprime for the Miller index numbers, which denote the crystallographic planes that come out on the surface of the crystals.

Keywords: Polymorphic transformations; Crystallography; Atomic structure; Lattice spacing; Principle of commensurability of conserved quantities; Emission spectra of hydrogen-like atoms