Date: Mon, 24 Jun 2002 08:45:20 -0600

Author: "Zigmund J. Peacock"

Subject: Re: razor blade diffraction

Post:


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Tappers Tappers Tappers, you all keyed on razor blades when the poor
woman was asking for criss-cross patterns.
To my best abilities I can't get criss or any other cross pattern
from a blade edge! What Beverley wants is a diffraction pattern produced
by a fine wire or even fabric mesh.
Fine wire mesh in front of a laser will produce marvellous patterns
with no added bits and pieces.

Eric thanks for words on the razor demo I have been trying to
improve mine for some time it seems the spatial filter is the answer.

Mc Master-Carr has fine mesh in their catalog, however I have some I
scavenged from a lab years ago.
Beverley send me a snail mail address and I'll send you a chunk.
Ziggy

BeverleyBowyer wrote:

>
>
> ----- Original Message -----
> From: Jerry DiMarco
> To: tap-l@listproc.appstate.edu
> Sent: Friday, June 21, 2002 7:13 PM
> Subject: Re: razor blade diffraction
>
> I do have a laser, but even using that I don't see anything
> very interesting. I was hoping to get the criss-cross
> pattern in the holes that you see in all the text books.
>
Zigmund J. Peacock
WWW.physics.utah.edu/people/staff/peacock.html
University of Utah/Physics
peacock@physics.utah.edu
115 SOUTH 1400 EAST #201 Tel 801 581 6602
SALT LAKE CITY UT 84112-0830 Fax 801 581 4801

"We sleep safely in our beds because rough men stand ready in
the night to do violence to those who would do us harm"
-- George Orwell

"All that is necessary for the triumph of evil is that good
men do nothing!"
-- Edmund Burke


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Tappers Tappers Tappers, you all keyed on razor blades when the poor woman
was asking for criss-cross patterns.

    To my best abilities I can't get criss or any other
cross pattern from a blade edge! What Beverley wants is a diffraction pattern
produced by a fine wire or even fabric mesh.

    Fine wire mesh in front of a laser will produce
marvellous patterns with no added bits and pieces.

    Eric thanks for words on the razor demo I have been
trying to improve mine for some time it seems the spatial filter is the
answer.

    Mc Master-Carr has fine mesh in their catalog, however
I have some I scavenged from a lab years ago.

    Beverley send me a snail mail address and I'll send
you a chunk.

           
Ziggy

BeverleyBowyer wrote:

 

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----- Original Message -----

style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black">From:
Jerry
DiMarco

To: tap-l@listproc.appstate.edu

Sent: Friday, June 21, 2002 7:13 PM

Subject: Re: razor blade diffraction

 

I do have a laser, but even using that I
don't see anything very interesting.  I was hoping to get the criss-cross
pattern in the holes that you see in all the text books.

 "We sleep safely in our beds because rough men stand ready in

the night to do violence to those who would do us harm"

        -- George Orwell

 "All that is necessary for the triumph of evil is that good

men do nothing!"

         -- Edmund Burke

 



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