That is true; but it is equally true of physicaltheories generally.
2
Prof O Raifeartaigh was best known for his research on the symmetries of physicaltheories.
3
Secondly, his ethical and spiritual beliefs, like those of nearly all the ancients, were closely interwoven with physicaltheories and local relations.
4
They revised again and again their astronomical and physicaltheories, hoping for some flaw which should render the moon's observed behaviour less mysterious, less terrifying.