Newtonian principle of relativity
parvaz-e bâzânigi-ye Newton
Fr.: principe de relativité de Newton
The Newton's equations of motion, if they hold in any → reference frame, they are valid also in any other reference frame moving with uniform velocity relative to the first.
principle of relativity
Fr.: principe de relativité
The first postulate in Einstein's theory of → special relativity whereby all the laws of physics are the same in every → inertial reference frame. In other words, no physical measurement can distinguish one inertial reference frame from another. See also → principle of constancy.