Hello. I've been reading an interesting article by a pair of smart fellows...(adsbygoogle = window.adsbygoogle || []).push({});

http://rmp.aps.org/pdf/RMP/v21/i3/p425_1

J. A. Wheeler, R. P. Feynman. "Classical Electrodynamics in Terms of Direct Interparticle Action". Reviews of Modern Physics. Volume 21. Number 3. 1949.

I haven't actually taken Quantum Field Theory myself, but I've been trying to wrap my head around the idea of Retarded and Advanced Potentials. From what I've been able to piece together... a retarded potential is one which propagates at a finite speed. An advanced potential is one that propagates instantaneously?! Do I have these definitions correct?

This article may be out of date... but it's interesting to hear his (Wheeler's) voice, the way he thinks...

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Absorber Theory, Retarded and Advanced Potentials

**Physics Forums | Science Articles, Homework Help, Discussion**