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They aren't the initials of any particular words.
My guess is that they were just taken from the alphabet.
They describe coordinates in a curved 2D space.
The letters were chosen by moving from z toward a.
Since x, y and z have been used, for the standard 3D
coordinates, someone decided upon u and v. Don't know
what dimension w is used for...
z,y,x,(w),u,v,
Harold
"Reuben Pearse" <reu### [at] presence-systems com> wrote in message
news:3aa7c030@news.povray.org...
> Hi all,
>
> Just wondering what the "UV" in uv_mapping stands for?
>
> Ultra-violet?
> Upper Volumetrics?
> Under valued?
> Utter vagueness?
>
> Thanks
>
>
>
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