"Andrew Coppin" <orp### [at] btinternetcom> wrote in message
news:3e14aaa2@news.povray.org...
>  I mean, you can see a fairy lights from
> quite a distance, considering how tiny they are. If I try and draw them
with
> POVRay they'll be smaller than a single pixel... but in the real world
they
> have a kind of "glare" around them which takes up more space and makes it
> easier to see them from a distance (when they're lit!) Is there some
> physical explaination for this?


Well, additionaly to all that has already been said, we benefit from a very
detailed simulation system oft named "reality" which is able to sample each
and every ray for every "pixel" on you retina. Hence, you see lights where
POV has a very great probabilty of seeing nothing because no ray hits the
light (not the light_source point, that is invisible - you can only see its
effects on its surronding, firstly the lamp itself (the glass, ...)).

Povingly,

Philippe

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