Friday update and discussions 2011-03-11

[louisv]

Originally Posted by Insuber

WOW! Exciting, we will call this discovery, ehmm, let me think ... Perspective! I think it's a nice name, isn't ?

No, no, the sun is so far away that the shadows should be parallel...

Here the shadows converge on a point on the ground, at the apex.

Think about it, a sun dial couldn't work


edit: the shadows are parallel, but we see them in perspective...