Light (Basics and Geometric Optics

This text is meant to accompany class discussions. It is not everything there is to know about uniform circular motion. It is meant as a prep for class. More detailed notes and examples are given in the class notes, presentations, and demonstrations. See the links below.

Single Slit Diffraction Experiment

When waves pass through a single opening that is large compared to the wavelength, λ, the waves bend a little showing the dirrection.

Image:by Lookang, Huygens Fresnel Principle.gif - Wikimedia Commons File:Huygens Fresnel Principle.gif - Wikimedia Commons. (2011). Commons.wikimedia.org Retrieved 24 March 2016, from https://commons.wikimedia.org/wiki/File:Huygens_Fresnel_Principle.gif

But if the opening is made smaller, on the scale of the wavelength itself, the waves bend signifcantly.

Lookang,. "Wavelength=Slitwidth.Gif". Wikipedia. N.p., 2011. Web. 24 Mar. 2016. https://en.wikipedia.org/wiki/File:Wavelength%3Dslitwidth.gif

This video will give you a basic analysis of the single slit.

This video can be found on YouTube at https://youtu.be/vAHNUCvLPsU

by Tony Wayne ...(If you are a teacher, please feel free to use these resources in your teaching.)

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