News tagged with light waves

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Making a better invisibility cloak

The first functional "cloaking" device reported by Duke University electrical engineers in 2006 worked like a charm, but it wasn't perfect. Now a member of that laboratory has developed a new design that ...

Nov 11, 2012 4.5 / 5 (17) 3 | with audio podcast

Chips that can steer light

If you want to create a moving light source, you have a few possibilities. One is to mount a light emitter in some kind of mechanical housing—the approach used in, say, theatrical spotlights, which stagehands ...

Jan 09, 2013 4.3 / 5 (9) 2 | with audio podcast