>"...a rich and growing subfield of wave physics shows that such “time reversal” is possible." Let's call this burgeoning branch of physics "Wave Reversal Phys

>"...a rich and growing subfield of wave physics shows that such “time reversal” is possible." Let's call this burgeoning branch of physics "Wave Reversal Physics". That sounds like a good name for now, Wave Reversal Physics... Plus, that would be a better sell to the "Time can't be reversed" crowd. Because anyone who's everyone who's anyone who's everyone in Physics -- who knows anything about waves -- know that they can be reversed. Perhaps not in gigantic superclusters (as might be required for actual Time Travel), perhaps not yet, but as a single discrete wave in various mediums -- wave reversal definitely is possible. Also, I should point out that that's for any wave which is not a pure sine wave. That's because pure sine waves have a period -- but they do not have a reversed, (AKA phase-conjugate) form. They are basically their own reversal at half-period. Well, I take that back -- it could be argued that a 180 degree out-of-phase secondary sine wave -- is the reversed form of an initial one... So phase could be one component of reversal in some wave types... Anyway, point is, let's call this new subfield of Physics: Wave Reversal Physics ...At least until/unless a better moniker is to be had! :-) <g> :-)