9 Mar
2007
9 Mar
'07
9:37 p.m.
On 3/10/07, Randy Dawson <rdawson16 at hotmail.com> wrote:
OK Chuck.
We can take a look at the Scientific American Ameteur Scientist.
I have that series of articles somewhere in a reprint collection - how
to build nitrogen CO2 lasers and tunable dye lasers from scratch, then
how to make holograms and lissajous patterns with modified speakers
and function generators. I always wanted to build the lissajous rig,
but never got past the component collecting stage. These days, with
the ubiquity of laser levels and laser pointers, that's the cheap end
of the project (I bought a laser level at the grocery store last month
for $5, then pulled the lens out of it so it projects a spot, not a
line, now. I was going to use it for a one-way RS-232 link, but it'll
make a nice lissajous source).
Just add Pink Floyd. ;-)
-ethan