SiC LED historic



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Source page: http://commons.wikimedia.org/wiki/File:SiC_LED_historic.jpg


English: 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
Français : Cette image montre une réplique des expériences de H.J. Rounds dans lesquelles il a découvert l'effet diode luminescente (LED). Une aiguille négativement chargée entre en contact avec un cristal positivement chargé de carbure ou de carborundum de silicium. À une tension de 9 V et à un courant de 30 mA on peut observer une lueur verte au point de contact entre l'aiguille et la goupille. Une version plus détaillée de l'installation peut être trouvée à http://www.dlip.de/?p=99
Date 5 May 2009(2009-05-05)
Source Own work
Author Biolippi


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EXIF data:
File name sic_led_historic.jpg
Size, bytes 75577
Mime type image/jpeg
Orientation of image 1
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Software used Adobe Photoshop CS3 Windows
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