Equation Icon  dE 4 G2m2 m [ ( Gm Gm ) ( Gm 52 Gm )] --- = -------13-2- (v1v12) -v212 + 2----1- 8----2 + (n12v1)(n12v12) 3v212- 6----1+ -------2 dt 5 c5r12 ( ) r12 r12 r12 3 r12 1 +1 <--> 2 + O -7 . (134) c