News tagged with antennae

Hiding in plain sight

A couple years ago, researchers introduced a new material that they said could make any object invisible to both radar and the human eye. Invisibility cloaking would have a major impact on defense technology, they explained, ...

Mar 05, 2013
5 / 5 (4) 1 | with audio podcast

Companies struggle to popularize mobile money

Mobile money may seem like a hot concept, but consumers aren't warming to it. At the world's largest cellphone trade show, here in Barcelona this week, the 70,000 attendees are encouraged to use their cellphones ...

Mar 01, 2013
2 / 5 (4) 11

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

'Curiosity' can be positioned with eclipses

Observations from 'Curiosity' when Mar's moon Phobos crosses in front of the sun, like in September, help us to understand exactly where the rover is on the red planet. Researchers at the Complutense University ...

Dec 13, 2012
5 / 5 (3) 5