Assorted LEDs. Light emitting diodes (LEDs) are made of two thin film layers of semiconducting material impregnated with impurities that create opposite electrical properties. Passing an electric current through the LED makes it produce light. The colour of the light depends upon the semiconducting material used. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Photo Researchers |
Taille de l’image : | 4347 px × 2878 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |