# Advanced Lienard-Wiechert potentials and fields?

1. ### johne1618

373
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/Liénard–Wiechert_potential

Are the advanced Liénard-Wiechert potentials and field expressions exactly the same except that they are evaluated at advanced time $t_a = t + R(t_a)/c$?

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