If there is a clock at point A … immediate vicinity of A by finding the positions … clock at point B that in all respects … can be evaluated by an observer at B. … at B without a further stipulation. So far … and B. The later can now be determined … is equal to the "time" it requires to … at "A-time" t_A, is reflected from B toward … synchronous by definition if t_B-t_A = T'_A-T_B. … [p. 127] we have established what is to be …
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