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Re: Laser beam



This suggests an experiment with water in a container with
parallel windows. Or with a thick plexiglas plate.

Gordon Smith wrote:

At 02:33 PM 10/14/99 -0500, you wrote:
What causes
this phenomenon? How to get rid of the annoying straight line? It
prevents me from doing something more interesting. Ordinary
scattering would produce an axially symmetric background, not
a straight line. ...

Maybe something in the manufacture process of the glass (perhaps a surface
effect caused by rollers?) You could get a neat crosshair, maybe, by
running it through two plates ;-) This would give you a nice orientation
setup for targeting purposes...