Gratings - Cornell Plate


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 Code Number :   6D20.10  

Disclaimer:

Reprinted by permission of Dick Berg, University of Maryland, for use on this website.

The demonstrations contained and referenced herein are listed for the purposes of cataloging and describing physics demonstrations which should be conducted only under the direction of a trained instructional support professional or physicist. These demonstrations are not presented for the purpose of being conducted by persons unconnected to this Facility and/or persons not consulting with or being supervised by the recognized instructional support professional or physicist and his/her staff. The University is responsible only for those demonstrations carried out using its own equipment using established safety and scheduling policies, and bears no responsibility for those choosing to use this source material for their own purposes. All demonstrations described and contained herein are public domain, and can also be found in reference materials in libraries, bookstores, and electronic sources.

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Condition :   Excellent  
Principle :   Refraction and Dispersion  
Area of Study :  Optics, Astronomy   
Equipment :   Laser (2 to 5 mw.), Optics Rail, Cornel Plate, template guide, flashlight, laser goggles.
Procedure :   The Cornel plate has single slits of different width,  double slits of different widths and different spacing, and a grating section.  Align the laser with the desired slit and project onto the screen.  The grating spacing verses dispersion should be readily apparent.  While this works best in the dark it is easier to move from slit to slit with the use of the flashlight.
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   References

Paul Gluck,  "Compact Disk Optics,"  TPT, Vol. 40, # 8, p.  468, Nov. 2002.

Christian Noldeke, "Compact Disc Diffraction", TPT, Vol. 28, # 7, Oct. 1990, p. 484.

David K. Walker, "Visible Diffracted Rays", TPT, Vol. 11, # 7, Oct. 1973, p. 435, reprinted in TPT, Vol. 40, # 3, p. 185, March 2002.

Mary Lou Clark, "Measuring the Wavelength of Light", TPT, Vol. 2, # 2, Feb. 1964, p. 85. 

 

Laxman G. Phadke and Jim Allen, "Diffraction Patterns for the Oblique Gratings", AJP, Vol. 55, # 6, June 1987, p. 562.

 

S. F. Jacobs, "Advanced Experiments With Diffraction Gratings", Optical Sciences Center, The University of Arizona, 1996.

Robert Ehrlich, "Measuring the Wavelength of Light by Ruler," Why Toast Lands Jelly-Side Down, p. 172-173.

Seville Chapman and Harold Meese, "Effective and Inexpensive Slits for Teaching Physical Optics," Cornell Aeronautical Laboratory, Inc., Buffalo, New York, August 8, 1956.

"The Diffraction Grating", Selective Experiments in Physics, CENCO, 1962.

"Diffraction Grating, Simple", Selective Experiments in Physics, CENCO, 1959.



Mail Questions and Comments to:  Dale Stille