Re: Interference and parallel plates

[Glenn Malin <GMalin@IUSD.ORG>]

I use two microscope slides separated with cellophane tape at one end.
A rubber tubing pinch clamp can be used to adjust the pressure between
the plates (and thus separation).  For a light source...just the normal
overhead flourescent works well.  You do get a bit of the rainbow effect
with white light.  It is very useful to a sheet of white plain paper
behind the glass.  Makes the lines stand out.  It should be fairly easy
and hard to miss.
Glenn Malin
University High School
Irvine, CA

> > > kphox@MAIL.CCSD.K12.CO.US 02/04/03 09:34AM >>>
I have been trying to show the interference pattern between two
parallel
glass plates which has one end separated by a thin foil. I am supposed
to
use monochromatic light. The closest I have for that is one of the LED
Lights i bought at the hardware.

I could use some guidance on what light does work or any other tips
that
will make this work. The paper that came with these plates makes it
sound
so easy.

Thanks in advance

Ken Fox