koherenssietäisyys
Koherenssietäisyys, often translated as coherence distance or correlation length, is a fundamental concept in physics and materials science, particularly in the study of waves and disordered systems. It describes the average spatial extent over which a wave or a physical property maintains a predictable phase relationship or correlation. In simpler terms, it quantifies how far a wave can travel before its phase becomes random or how far a material property, like magnetization or electronic state, remains correlated.
The concept is crucial in understanding phenomena like wave propagation through scattering media. For example, in
In condensed matter physics, koherenssietäisyys plays a role in understanding the behavior of electrons in disordered