On Sun, 22 Mar 2009 22:58:55 -0700 (PDT)
David Griffith <dgriffi at cs.csubak.edu> wrote:
  Then I start thinking about using a laser in place of
an
 electron beam.  Hmm... Anyone have any suggestions on pursuing that? 
Several years
ago I build a simple one axis laser deflection systen
using the voice coil assembly from an old harddisk and the speaker
amplifier from an old radio.
--
tsch??,
       Jochen
Homepage: 
http://www.unixag-kl.fh-kl.de/~jkunz/