Something else that is interesting is that this is also the precise configuration for a ring laser gyro which is used to determine the rotational rate (MOTION) of a body...more simply, one configuration like this detects pitch rate, one detects roll rate, and one detects yaw rate. The triangles are formed by mirrors and at one vertex is a laser emitter that shoots a laser onto the opposing mirror, which is then reflected around the mirrors MANY times until it is combined (laser interferometry) with another laser that has been traveling around the same mirrors in the opposite direction. By detecting the phase difference between the two beams of light after a long path around the mirrors, you can directly compute the body's rotational rate in that plane.
This is why I believe Dr. Ronald Mallett has the right idea (as a minimum), for he is trying to construct his time machine based on circulation of light. And oh BTW, the storied device from ancient mystical teachings known as a Merkaba is related to this...
1) The Merkaba shape is said to be based upon two intersecting tetrahedrons, in the form of a 3-D Star Of David.
2) The concept of the Merkaba deals with "circulating light".
RMT