An Improved Box Theater

• Autores: Michael E. Huster
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 49, Nº. 6, 2011, pág. 356
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • While designing an optics lab for a conceptual physics course, I came across a �box theater� activity.1The box theater is a pinhole camera obscura made from a box that students put over their heads and shoulders. I use the activity as a capstone experience to explain optical systems. (Classroom demonstrations of the camera obscura have been described by others.2) First, the students build and experiment with a camera obscura made from a plastic cup and a convex lens with a focal length of 7.5 cm, and then �wear� the box theater. The difficulty with the box theater is the dimness of the image. A cloth drape has to be hung from the bottom of the box around the shoulders of the students to prevent light leakage, and the students have to wait a few minutes for their eyes to adjust to the darkness.