Established around 100 B.C., and lasting until its fall between the seventh and eighth centuries, Teotihuacan was one of the largest ancient cities in the world, it is one of the most incredible constructions in America, at Teotihuacan we find evidence that the...
Researchers from the University of Oxford have for the first time discovered an approach to electrically switch organic LEDs (OLEDs) to emit either left- or right-handed circularly polarized light without changing the light-emitting molecules. This could be useful for...
