"Alberto" <ame### [at] mausbve> wrote :
>
> Well, the sphere with unit radius is commonly referred to as the unit
> sphere.
>

    That's why I make all my spheres with a 0.5 radius, so they will be more
reasonably called 'unit' spheres. So that like a unit box, if I copy one
exactly one unit away, they will just touch.

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