netrat Posted September 18, 2010 Share Posted September 18, 2010 If you have ever come across a laser pointer, you might have noticed that looking at laser reflection on any surface like a wall looks strange. It looks like a sort of TV screen without cable connection. I mean it looks like a mixture of bright and dark spots. I hope i made myself clear. Any explanation? Link to comment Share on other sites More sharing options...
insane_alien Posted September 18, 2010 Share Posted September 18, 2010 its just an interference patternt caused by the differing path lengths of light to reach your eye. 1 Link to comment Share on other sites More sharing options...
John Cuthber Posted September 18, 2010 Share Posted September 18, 2010 There's more about it here http://en.wikipedia.org/wiki/Speckle_pattern 1 Link to comment Share on other sites More sharing options...
netrat Posted September 18, 2010 Author Share Posted September 18, 2010 Thanks alot! Now i can sleep well. Link to comment Share on other sites More sharing options...
danielpower Posted September 18, 2010 Share Posted September 18, 2010 What about green laser reflection? Link to comment Share on other sites More sharing options...
insane_alien Posted September 18, 2010 Share Posted September 18, 2010 (edited) same for any laser. colour is immaterial in this case Edited September 18, 2010 by insane_alien Link to comment Share on other sites More sharing options...
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