# Advanced Lienard-Wiechert potentials and fields?

by johne1618
 P: 355 The standard (retarded) Liénard-Wiechert potentials and the expressions for the electric and magnetic fields derived from them are all evaluated at retarded time $t_r = t - R(t_r)/c$: http://en.wikipedia.org/wiki/Li%C3%A...hert_potential Are the advanced Liénard-Wiechert potentials and field expressions exactly the same except that they are evaluated at advanced time $t_a = t + R(t_a)/c$?