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" An Experimental Simulation of Rainbow Diffraction Through the Use of Tapered Glass Rods "
Bowe, Matthew Joseph
Van der Noordaa, Johan
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Latin Dissertation
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English
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| Record Number
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1114108
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| Doc. No
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TLpq2403089680
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| Main Entry
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Bowe, Matthew Joseph
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Van der Noordaa, Johan
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| Title & Author
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An Experimental Simulation of Rainbow Diffraction Through the Use of Tapered Glass Rods\ Bowe, Matthew JosephVan der Noordaa, Johan
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| College
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California State University, Fresno
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| Date
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2020
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| student score
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2020
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| Degree
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M.S.
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| Page No
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48
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| Abstract
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The natural formation of the rainbow is one of the most important and widely studied optical phenomena throughout history. Its creation is due to a process of refraction, and an underlying wave interference that is not commonly discussed among introductory physics texts. I have created an experiment that simulates the light scattering processes within a water droplet to clearly show this process of interference. I show that through the use of tapered glass rods, it is possible to recreate rainbow scattering of individual wavelengths of light that agree with the Debye theory of scattering. Experimentally, I show that the material of fused quartz is better than borosilicate when recreating a diffraction pattern similar to that of a natural rainbow. Calcium fluoride may provide an even better result, however it requires a more careful approach than I was able to achieve to properly modify it into an appropriate tapered shape. Within this experiment, I also include methods to superimpose lights of different colors onto the same position. When superimposing light, the 50-50 beamsplitter has out performed the available dichroic filter. It may be possible to achieve overall better results with the dichroic filter, if one with proper specifications is used. The methods I have used throughout this experiment can be applied for future analysis of rainbow diffraction, or they may be ideal for demonstrative purposes.
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Demonstration
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Diffraction
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Optics
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Physics
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Rainbow
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Tapered
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