Archivo: SiC LED historic

Description: This image shows a replication of H.J. Round's experiments in which he discovered the effect underlying the light emitting diode (LED). A negatively charged needle contacts a positively charged crystal of silicon carbide or carborundum. At a voltage of 9 V and a current of 30 mA a green glow can be observed at the contact point between needle and crystal. A more detailed version of the setup can be found at www.dlip.de
Title: SiC LED historic
Credit: Own work
Author: Biolippi
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes