A team of engineers and scientists has shown for the first time that a hard-X-ray cavity can provide net X-ray gain, with ...

In my opinion, invisibility is no longer a science fiction concept.” A B-2 stealth bomber takes off from Nellis Air Force ...

The invisible stuff makes up about 85 percent of all matter in the universe, but researchers know little about it ...

How we interact with objects in the world often depends on what colors we perceive them to have, and on how those perceived colors accord with what we know to be the normal or 'canonical' colors of ...