Equation Icon  V~ --------- Area(S) ( 1 gf ) EH (S) := ------2- 1 + --- rr'dS = V~ -16pG---- 2p S Area(S) 1 gf ( ) = ------2---- ss'+ ss' - y2 - y2'+ 2f11 + 2/\ dS (38) 16pG 4p S