Therefore a different definition of inertial motion is required.

Laue (1913) pointed out that the acceleration can be made arbitrarily small in relation to the inertial motion of the twin.

The starting point for general relativity is the equivalence principle, which equates free fall with inertial motion.

At these resolutions, they were able to track the inertial Brownian motion of the sphere.

From this principle, Einstein deduced that free-fall is actually inertial motion.

The following equation gives the acceleration with respect to a rotating system of an object in inertial motion.

This is the first time inertial Brownian motion of a particle in a fluid have been measured.

In other words, this is a geodesic congruence; the corresponding observers are in a state of inertial motion.

There was a tug of inertial motion, and she realized that they were coming around in a sharp, tight circle.

These are impossible to remove by inertial motion, except at one single nominated point of the body.