This site, from the University of Massachusetts at Amherst, provides a demonstration of laser light diffraction around a pinhead. Photos illustrate the demo set-up. A photo of the diffraction pattern shows Poisson's Spot, the bright spot observed in the center of the pattern.
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Keywords:Modern Optics,Informal Education,Undergraduate (Lower Division),Higher Education,NSDL,Poisson's Bright Spot,Undergraduate (Upper Division),Diffraction,diffraction,Lasers,Physics,Engineering,High School,NSDL_SetSpec_439869,oai:nsdl.org:2200/20070602233943394T,Poisson's Spot,Optics,Vocational/Professional Development Education
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