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?

its just an interference patternt caused by the differing path lengths of light to reach your eye.

There's more about it here

http://en.wikipedia.org/wiki/Speckle_pattern

Thanks alot!

Now i can sleep well.

What about green laser reflection?

same for any laser. colour is immaterial in this case

Edited September 18, 201015 yr by insane_alien