Editing Classical physics (section)

== Comparison to quantum physics ==

Mathematically, quantum physics equations are those containing the [[Planck constant]].{{cn|date=February 2025}} According to the [[correspondence principle]] and [[Ehrenfest's theorem]], as a system becomes larger or more massive the classical dynamics tends to emerge, with some exceptions, such as [[superfluidity]]. This is why we can usually ignore quantum mechanics when dealing with everyday objects and the classical description will suffice. [[Decoherence]] is the field of research concerned with the discovery of how the laws of quantum physics give rise to classical physics.{{cn|date=February 2025}}