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Summary
| Description |
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 | |
| Source | Own work |
| Author | Biolippi |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:26, 8 May 2009 | 640 × 426 (74 KB) | Biolippi~commonswiki | still bugfix... | |
| 15:25, 8 May 2009 | 640 × 426 (96 KB) | Biolippi~commonswiki | Reverted to version as of 15:16, 8 May 2009 | ||
| 15:25, 8 May 2009 | 640 × 426 (74 KB) | Biolippi~commonswiki | last version was corrupted. | ||
| 15:23, 8 May 2009 | 640 × 426 (74 KB) | Biolippi~commonswiki | Enlargement of central part. | ||
| 15:16, 8 May 2009 | 640 × 426 (96 KB) | Biolippi~commonswiki | {{Information |Description={{en|1=This image shows a replication of H.J. Rounds 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 o |
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