[turnipsock]

The direct effect of gravity is pretty small but the effect of the refraction is significant. If the earth's atmosphere weree replaced by SO2 which has a slightly greater refractive index, the curvature due to refraction would be roughly the same as the curvature of the earth and light would go right round (ignoring any mountains).

Would that mean if the Doc fired a laser, 3ft above the ground, in an atmosphere of SO2, it would hit him in the ars back? I saw a good laser in Thunderball.

[Karen W.]

Anyone reading this will wonder what the hell we're talking about. They won't realise a post has been deleted. Well, they will now because I've mentioned it. But they won't know what it said.

He was spamming the site.. in a couple places.. LOL!