If `gamma^(-2)` = (1 V2/c) then the potential components and the perpendiuclar components of acceleration are given respectively as
a11 = 011 r-2 a `_|_` = a' `_|_` r-3
a11 = 0 finite and a `_|_` is zero
a11 = a11 r3 . a = a' `_|_` r-2
a11 = 0 and `_|_` a `_|_` a' is infinite