The phrase "a physical basis" is correct and usable in written English.
It can be used when discussing the foundational or underlying physical principles or structures of a concept, theory, or phenomenon.
Example: "The researchers aimed to establish a physical basis for the observed changes in the material's properties under stress."
Alternatives: "a physical foundation" or "a material basis".
I also wonder whether doctors might routinely explore a physical basis for the sudden, unexplained onset of emotional pain.
In the brain they have found a physical basis for all our thoughts, aspirations, language, sense of consciousness, moral beliefs and everything else that makes us human.
Planck did not offer a physical basis for his proposal; it was largely a mathematical construct needed to match the calculated blackbody spectrum to the observed spectrum.
The problem with drug addiction is that it does have a physical basis, where foreign elements introduced into the body disrupt the function of certain organs, in this case the brain.
"Earlier in my academic journey I would have resisted this unavoidable fact of biology on the misguided rounds that a physical basis would diminish the grandeur and centrality of my choice of a life partner".
In 1964 Gell-Mann introduced the concept of quarks as a physical basis for the scheme, having adopted the fanciful term from a passage in James Joyce's novel Finnegans Wake.
Merck, the manufacturer of Elavil, commissioned the psychiatrist Frank Ayd to write a book called Recognizing the Depressed Patient, in which he extolled the "chemical revolution in psychiatry" and urged doctors to reassure patients they weren't losing their minds, but rather suffering a "common illness" with a "physical basis" and a pharmacological cure.
The demonstrated success of this modelling framework is explained on a physical basis.
A new physical basis for a previously published model for the structure of calcium silicate hydrate (C-S-H) as measured by nitrogen sorption is described.
As the Lagrangian formulation is the natural basis for structural-based constitutive models (e.g., integral models), it is capable of using a correct physical basis for the flow physics of polymer melts as a structured liquid.
The development of hydrodynamic models able to provide reliable quantitative predictions of flow behaviour and possessing a sound physical basis, is an essential prerequisite for obtaining the necessary insights into this complexity.
