"Warp" <war### [at] tagpovrayorg> wrote in message
news:3a7938ef@news.povray.org...
>
>   This is easier to figure out with black objects. In theory, a black
object
> should not reflect ANY light. However, have you ever seen a black object
> without even the slightest highlight and shadow? Even the blackest object
> always reflect some light and that's why you see the shape of the object
> and not only its silhouette.
>   If even black objects reflect some light, then non-black objects reflect
> even more easily.

IIRC AC.Clarke emphasises the other-worldliness of the monolith by giving it
the property of pure black.

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