Fr.: relativité galiléenne
The principle according to which the fundamental laws of physics are the same in all
frames of reference moving with constant velocity with respect to one another
(→ inertial reference frames). Same as
→ Galilean invariance and
→ Newtonian relativity.
After Galileo Galilei (1564-1642), the Italian physicist and astronomer, who first described this principle in 1632; → relativity.