LEDs Are Diodes

• Cynthia G. Widstrand ^[1] ; Jonathan Breitzer ^[1] ; Arthur B. Ellis ^[1] ; George C. Lisensky ^[2] ; S. Michael Condren ^[3]
  1. [1] University of Wisconsin–Madison

     University of Wisconsin–Madison

     City of Madison, Estados Unidos

     
  2. [2] Beloit College

     Beloit College

     City of Beloit, Estados Unidos

     
  3. [3] Christian Brothers University

     Christian Brothers University

     Estados Unidos

     

  Mostrar afiliaciones +
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 78, Nº 12, 2001, pág. 1664
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • In this activity 50-socket strands of incandescent holiday lights are cut to produce 2-socket strands and 6-socket strands. One of the incandescent bulbs can be replaced with a light-emitting diode (LED). Typical LED circuits contain a resistor to limit current flow; in these circuits that function is performed by the remaining incandescent bulb(s). The diode nature of LEDs is demonstrated, as well as the energy associated with different wavelengths of light. The activity illustrates the structure and properties of matter, the interactions of energy and matter, the relationship of energy and color, and the contributions of chemistry to high-tech materials.