Re: ATM Bath interferometer

[ric rokosz <ab866@freenet.durham.org>]

Kevin
I would strongly dissuade you from using the half silvered diagonal as the 
set up requires you to match up two  bright disks (the return beams from 
the mirror) and with the laser the brightness may be more than your eyes 
can take.That is the reason I decided not to go ahead with the laser 
setup -my eyesight is too important.Cut the light down to next to nothing 
if you can other wise use some sort of ground glass screen when looking 
for the return beams.The laser might be used to align the white light 
setup for faster results,but BEWARE of any laser light!

Ric
P.S. A ground glass screen can be made from a piece of plexiglass that 
has rubbed down with say 220 grit.(a piece of clear plexiglass to start).