Apparatus for teaching physics: Poisson spot with magnetic levitation

• Autores: Matthew Hoover, Michael Everhart, José DArruda
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 48, Nº. 2, 2010, págs. 135-136
• Idioma: inglés
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• Resumen

  • In this paper we describe a unique method for obtaining the famous Poisson spot without adding obstacles to the light path, which could interfere with the effect. A Poisson spot is the interference effect from parallel rays of light diffracting around a solid spherical object, creating a bright spot in the center of the shadow.