In article <1VTqN4P4v3hy=r=I9ZwYlfD3xy=o@4ax.com>, Peter Popov <pet### [at] usanet>
wrote:

>POV calculates refraction based on the laws of physics. When the ray
>crosses the boundary between two media (in the real-world sense of it,
>not the POV media feature!) with different IORs, it bends. So when it
>enters a gem with a bubble, for example, it will bend upon entering
>the gem, travel linearly through it and bend upon exitting the gem. If
>it hits the bubble before it leaves the gem, it will bend, then when
>it hits the gem it will bend again etc. Does this answer your
>question?

Yeah...I have a BS in physics....that makes sense :)  Just wanted to know if 
it did in fact follow those basic laws.

Thanks!

Tim

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