Warp <war### [at] tagpovrayorg> wrote:
>   You can approximate a normal distribution of numbers between 0 and 1
> by taking the sum of n equally-distributed numbers

(which are between 0 and 1, of course)

-- 
plane{-x+y,-1pigment{bozo color_map{[0rgb x][1rgb x+y]}turbulence 1}}
sphere{0,2pigment{rgbt 1}interior{media{emission 1density{spherical
density_map{[0rgb 0][.5rgb<1,.5>][1rgb 1]}turbulence.9}}}scale
<1,1,3>hollow}text{ttf"timrom""Warp".1,0translate<-1,-.1,2>}//  - Warp -

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