How to make Diffraction Grating Slides

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From: Paul Doherty (pauld@exploratorium.edu)
Date: Wed Apr 11 2001 - 11:33:12 PDT 

Message-Id: <l03110704b6fa53d818d0@[192.174.2.173]>
Date: Wed, 11 Apr 2001 11:33:12 -0700
From: Paul Doherty <pauld@exploratorium.edu>
Subject: How to make Diffraction Grating Slides

>Date: Wed, 11 Apr 2001 11:41:56 -0500
>From: Thomas Senior <seniort@newtrier.k12.il.us>
>Subject: Re: Diffraction Grating Slides
>To: tap-l@listproc.appstate.edu
>MIME-version: 1.0
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>
>Hi,
> I make 3x5 cards with the holographic grating across the hole to give
>to students. I have developed a way to do this pretty cheaply, and with
>less effort on my part. Let me try to explain the technique:
>
>Take a 7 inch length of clear packing tape and place it on a table sticky
>side up. (this is the tough part)
>
>Cut a strip of the Holo grating and place Emusion side UP along the center
>of the tape. The holo grating curls toward the emusion side from the roll.
>
>Cut a strip of overhead plast
>ic that is 7 inches long, and wider than the Holo strip, but narrower than
>the tape. Place this over the emusion of the Holo grating.
>
>Place wax paper over the whole thing, and cut into strips to give to the
>students. They remove the wax paper and stick the composit to the 3x5
>card.
>
>I drill a whole pack of 3x5 at one time on the drill press by tightly
>clamping the pack between two sacrificial pieces of wood. The hole
>doesn't need to be larger than 1/2 cm, but if you are generous, a 1 cm
>hole will
> be easier for those students with glasses to use.
>
>Hope this helps.
>
>Tom
>
>
>
>Thomas J. Senior
>Physics Teacher
>New Trier High School
>385 Winnetka Ave
>Winnetka, IL 60093-4295
>847-784-6739
> FAX 847-501-6508
>
>Those who can do.
>Those who understand, teach.
>
>
>
>
>
>
>
>
>>>> Clifford Bettis <cbettis@unlserve.unl.edu> - 4/11/01 11:11 AM >>>
>Does someone have a recommendation fro where to purchase premounted
>diffraction grati
>ng slides?
>
>For years I have been cutting up grating material and mounting slides
>myself. Lately, students seem to take delight in destroying the things, so I
>am thinking I should find a source and resell them as part of the materials
>pack for classes. I have been using the holographic grating fabric which
>gives lovely bright spectra; unfortunately it can also be ruined by fingers.
>We have classes with hundreds of students in them so I can't mount them in
>glass to give out. I notice that Project Sta
>r sells them mounted in glass
>for about $3.50 each in lots of 10.
>
>So what do other people do about this?
>
>Cliff Bettis
>

Paul "But it is more complicated than that!" Doherty,
Senior Staff Scientist, The Exploratorium.
pauld@exploratorium.edu, www.exo.net/~pauld

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