Electromagnetic anisotropy. Final report, 1 Oct 76-30 Sep 79. [Laser interferometric tests of postulates]

Two new precision laser interferometric tests of the postulates of special relativity are described. Two independent frequency-stabilized lasers situated on the circumference of a rotatable platform beat together at the center. A variation in the beat frequency as the table rotates can be interpreted as a one-way anisotropy in the speed of light. A test for a round trip anisotropy is made by monitoring the cavity length change as the laser orientation changes. This can also be interpreted as a mass anisotropy in space.