10 Mar
2007
10 Mar
'07
1:53 p.m.
Ethan Dicks wrote:
On 3/10/07, Randy Dawson <rdawson16 at hotmail.com> wrote:
Aug 1980, page 158, sounds like the second article you refer to:
attaching mirrors to two speakers oriented at angles to each other, etc.
(The same issue has an opened disk drive on the cover and an article about
disk drive technology.)
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