Accelerated Clock Rate Argument
Using accelerated reference frames, Einstein concluded that clocks at different gravitational potentials should not run at identical rates, linking gravity directly with the measurement of time.
Albert Einstein · Event
Using accelerated reference frames, Einstein concluded that clocks at different gravitational potentials should not run at identical rates, linking gravity directly with the measurement of time.

Using accelerated reference frames, Einstein concluded that clocks at different gravitational potentials should not run at identical rates, linking gravity directly with the measurement of time.