Meanings of physical theories in English

That is true; but it is equally true of physical theories generally.

Prof O Raifeartaigh was best known for his research on the symmetries of physical theories.

Secondly, his ethical and spiritual beliefs, like those of nearly all the ancients, were closely interwoven with physical theories and local relations.

They revised again and again their astronomical and physical theories, hoping for some flaw which should render the moon's observed behaviour less mysterious, less terrifying.