Re: backward ray tracing

On Fri, 22 Feb 2008, AES wrote:

[But despite that, if anyone can point to a good, clear textbook
discussion of time-reversal symmetry in e-m and optics problems, that's
a favorite of theirs, and that specifically includes loss and gain, I'd
be glad to hear of it. I'm pretty sure I understand the topic, but I'd
be glad to check my understanding against someone else.]

I don't know of any [1]. Perhaps you should write one?


[1] I know two good research-oriented books on symmetry in general in electromagnetism, but I wouldn't call them clear.

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