On Sun, 2 May 1999, Jim Morrison wrote:
> I have a desk "Space Calendar" that has a tear-off page with an outer space
> related picture for each date. The picture for April 30, shows the Space
> Shuttle on the ground at Edwards Air Force Base with a perfect reflection of
> the vehicle in what ap
Jim,
The air near the ground is hotter and thus has a lower optical index of
refraction. This causes light rays to bend upwards, much like a prism with
its
apex pointed downward. It therefore behaves like a mirror.
Gordon
At 09:26 AM 5/2/99 , Jim Morrison wrote:
>I have a desk "Space Calenda
I have a desk "Space Calendar" that has a tear-off page with an outer space
related picture for each date. The picture for April 30, shows the Space
Shuttle on the ground at Edwards Air Force Base with a perfect reflection of
the vehicle in what appears to be a lake. It is not a lake, but a mira
