Oh, okay, yeah.  I knew about those, one of my favorites is the eccentricity
in Henyey-Greenstein 'type 5', just thinking more in terms of the =grain= as
being more or less the abstract equivalent to a measurable object per
=grain= as it were.   That and along with the shading, or hilighting,
described at that web page.  Kind of causes me to wander into futile mental
exercises.
You have to keep in mind I only dabble in trying to understand it all.

Bob

"Nathan Kopp" <Nat### [at] Koppcom> wrote in message
news:385efd72@news.povray.org...
> omniVERSE <inv### [at] aolcom> wrote...
> > Looking that stuff over the particle size thing for media would be great
> > wouldn't it?  Adjustment from chunky dust to gases maybe, and using a
> > similar concept as the angle dependant reflections the way it reads
there
> > anyhow.
>
> Take a closer look at the media documentation.  You _can_ adjust from
chunky
> dust to gases.  From the docs:
> "The integer value Type specifies one of five different scattering phase
> functions representing the different models: isotropic, Mie (haze and
murky
> atmosphere), Rayleigh, and Henyey-Greenstein."
>
> -Nathan
>

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