Artificial Biospheres In Space

--- In spacesettlers@yahoogroups.com, "Combs, Mike"
> Here's an idea I've thought about. It's important to remember that
these
> ...
> Finally we are down to only the filtered mirrors, and by now the
> lighting is distinctly orange. We then sequentially begin to tilt
> the yellow until they're all out of the picture, and then the
> orange. By the end of the process, the habitat is bathed in dim
> red light like the light from a sun slipping below the horizon,
> before the lights go out completely. In the morning, we reverse
> the process.
> Even if we can't recreate the motion of the "sun" across the sky,
> I'm convinced we can at least emulate the colors and light levels
> of sunrise and sunset.

You could also possibly be changing the image geometry to make the
sun look physically larger at sunset and sunrise, since our minds are
used to being deceived about that.

>
> > I started looking at an alternate central axis method that would
> > basically be an inverse of a planet, with at any given instant
> > having half the station dark, and the rest illuminated much like
> > a normal day.
>
> One possible problem with this is that there would be an awful lot
> of reflected light in the "night" regions. Possibly nearly as much
> as on an overcast day on Earth.
>
> Regards,
> Mike Combs

This is definitely true, so there would have to be essentially a
rotating wall, but you'd still have light leaking underneath it, like
having a bedroom door closed but all the lights on in the hall. Not
a very good solution either.