"Alain" <ele### [at] netscape net> schreef in bericht
news:43603cc3$1@news.povray.org...
> >
> In the images I saw, the shadowing squares are between 1/2 and 2/3 of the
ring's radius. With such
> proportions, you have prety whide penumbraes.
>
What I forgot to say is that the Ringworld radius is 95x10^6 miles. This
means that the shadow squares are very close to the sun in comparison to the
Ringworld.
Remember the chapter about the shadow squares when Lying Bastard drifts
helplessly against the shadow square thread: it is very, very hot!
Thomas
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