>[JSafrem] A horde of 2,000,000 stretching out 100-200 km wouldn't have
>been able to see the pillar of fire, both because of the distance of
>most of the Israelites from the pillar and because of the curvature of
>the earth.
The well known problem in the cinema, if a tall person sits in front of
us...
May I go the other direction, but you have surely heared about the Tyndall
phaenomenon. It is a reflection of light, which might enhance far off light
sources, in highly poluted atmosphere. Like during a volcanic eruption. For
example of Thera...