Testing the symmetry of space-time by means of atomic clocks

According to Einstein the speed of light is always the same. But according to theoretical models of quantum gravitation, this uniformity of space-time does not apply to particles. Physicists have now tried to detect a change in the uniformity of space-time using two optical Ytterbium clocks.

from Engineering News -- ScienceDaily https://ift.tt/2F9MvJS