hi,

Alain <kua### [at] videotronca> wrote:
> The actual effect of all media depend on how long is the path through
> them as well as it's density. Double the path's length and you double
> it's contribution.
> Next, ...

I'll need to print, read, and then study this reply + many of the preceding.
hoping to .. assimilate the information .. somehow.  :-)

thank you very much, and everybody who has "chipped in".

the plan now is to make a simple "pre-cursor" animation to play with the
concept, learn.  hoping to start on this in the next few days.


regards, jr.

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