Exploring the diffraction grating using a He-Ne laser and a CD-ROM

• Joel Tellinghuisen ^[1]
  1. [1] Vanderbilt University

     Vanderbilt University

     Estados Unidos

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 79, Nº 6, 2002, pág. 703
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • A compact disc (CD) serves as a diffraction grating for the study of the dependence of the angles of diffracted beams on that of the incident beam from a He-Ne laser. The demonstration/experiment illustrates in a visually powerful way the occurrence of different orders of diffraction. Knowledge of the wavelength of the laser permits determination of the groove spacing within ~1% by direct measurement of the angles with a protractor.