Reflections on a Disco Ball

• Jair Lúcio Prados Ribeiro ^[1]
  1. [1] Universidade de Brasília

     Universidade de Brasília

     Brasil

     
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 54, Nº. 9, 2016, págs. 532-534
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • A disco ball is a spherical object covered with small plane mirrors. When light reflects on these mirrors, it is scattered in many directions, producing a novel effect. The mirror globe is usually set to rotate, creating a profusion of moving spots (Fig. 1). In this article, we present a geometrical description of the movement of these spots and an experimental activity to test the model.