Re: backward ray tracing

Helpful person wrote:
On Feb 21, 1:52 pm, Phil Hobbs
Okay, since we've done the OP's homework for him: Since ray tracing is
time reversal invariant, including scattering and thin film effects, why
doesn't backward ray tracing accurately render the visual image of a
caustic or a colour shift?

Cheers,

Phil Hobbs- Hide quoted text -

I believe that thin films with absorbing (metal) layers are not the
same if reversed.


As Prof. S. pointed out, you have to replace loss with gain when you do the time reversal.

Cheers,

Phil Hobbs
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