On Thu, Aug 09, 2001 at 02:28:25PM -0500, Austad, Jay wrote: > Unfortunately, this probably won't work. At 3 blocks, the beam on my laser > point is about an inch wide. This is most likely due to changes in the air > temp and index of refraction. 1 inch at 3 blocks compared to 1mm at the > pointer is a big difference, it's only going to get worse at longer > distances, especially to the moon. :) That was my first thought when I read the idea. IME, cheapo consumer- market lasers are crap for diffusion. 1 inch at 3 blocks is actually a good deal better than mine, which can get to about half an inch from across the room. (But mine is about... oh... 6 or so years old.) -- With the arrest of Dimitry Sklyarov it has become apparent that it is not safe for non US software engineers to visit the United States. - Alan Cox "To prevent unauthorized reading..." - Adobe eBook reader license