Re: Foucault test
Bob Madden (madden@netcom.com)
Sun, 9 Jul 1995 15:48:03 -0700 (PDT)
Ken, I think there is a description in S&T about 82 or 84. It isn't
cpmplicated. You use only one sharp edge over the light (I use a frosted
led). The reflectio produced the other sharp edge producing a slit.
However the idea is to get your eyr (without poking it) as close to the
source as possible. I try to keep it about 1/4 above the source. We also
use the same source as a Ronch itester.
Bob
):-{])) <---- madden@netcom.com
madden@svpal.org
Remember amateur astronomers:
"keep looking for the next Universe"
On Sun, 9 Jul 1995, Ken Lowther wrote:
> Where can I get more info on a "slitless" tester?
>
> Ken Lowther
> 00109366@ysub.ysu.edu
>