Momentum of a wave of any physical nature in a context of the Abraham-Minkowski dilemma

Abstract

We consider the known Abraham- Minkowski dilemma about the momentum of light wave in matter from point of view a general approach to the momentum of any wave of any type, the energy of which is different from zero. We show that the wave has a momentum. The momentum density flow is in inverse proportion with the wave velocity and is equal to the energy density. As a particular case, the momentum of light wave in matter is proportional to its reflective index and, therefore, the momentum of light in matter corresponds to the Minkowski form.