> I know emissive
> media doesn't "emit" light but I thought scattering media would if it were
> illuminated with a real light source.  Did I just pick poor settings or am
> I wrong?

None of the medias does emit light light a light_source. Emissive media 
"emits" light when you use radiosity (with "media on" specified in the 
radiosity block). This does not work with scattering media IMHO. If you 
want to fake that effect, I suggest trying some point lights with fading 
or some spotlights.


HTH,
Florian
-- 
camera{look_at-y*10location<8,-3,-8>*10}#local a=0;#while(a<999)sphere{
#local _=.01*a-4.99;#local p=a*.01-5;#local c=.01*a-4.995;<sin(p*pi)*5p
*10pow(p,5)*.01>sin(c*c*c*.1)+1pigment{rgb 3}}#local a=a+1;#end
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