:
(. 35). , u ' = , (37.6) u= (c+v)/(1+cv/c) = ( , u = u ' ). , .
, . - , /n (n ), .
.
:
, . t 12 =t 2 -t 1,
, . Dt = t2-t1, D x=x 2 -x 1, D y =y2 -y1 Dz=z2-z1, (38.1)
'
(36.3),
(38.2), , (s'12)2 = c2(Dt)2-(Dx)2-(Dy)2-(Dz)2, . .
(s'12)2 = s212.
, , , - , . , , , .
, -.
, , , , 2 . "" -.
() . . (sAB) :
s 2 ab= c 2(D t)2((D r)2,
D t D r , . , . . ( D r D t ). s 2 AB> 0, ; , (D r = 0) sab= c D t, . . , .
S 2 AB <0, ; , (D t = 0) D r = = iSAB,
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sab= 0 ; D r = c D t , . . .
́ ́ , , , ( ). , - ; ..