Consequences of the qm in inertial reference frame A
     In reference frame A, the speed of light (cr) relative to the reference frame is constant as shown in Fig. 1 (because A is not moving through the qm). Along the x, y, and z axes observers put distance marks at the 1 light-second locations where light signals sent to mirrors at the origin arrive back two seconds after the signals are sent. Similarly, observers put marks every .1 light-second along the axes as shown. These distances marked off by observers in A are absolute distances in absolute light-second (LS) units because the speed of light in A is ca and because clocks in A keep absolute time. A second (s) displayed on a clock in reference frame A is an absolute second (sa). (It will be shown why this is not the case in reference frame B.)
     Clocks at the distance marks in A are synchronized with the clock at the origin of A as follows. At each distance mark an observer sets the clock to read D seconds later than the time she sees on the origin clock, D being the observed distance in light-seconds from the origin. At time tA=1 s, observers at the 1 light-second marks see the origin clock reading 0 s (because it takes 1 sa for light to travel 1 LS from the origin to the observers), and the observers' clocks read 1 s (as shown inside circles).
     The laws of physics are valid in reference frame A because the observers' units of time and distance are absolute units.