News tagged with radio signal

Widening the search for extraterrestrial intelligence

"The Search for Extraterrestrial Intelligence (SETI) has been dominated for its first half century by a hunt for unusual radio signals. But as he prepares for the publication of his new book The Eerie Silence: Are We Alone?," ...

Mar 01, 2010
4.3 / 5 (10) 1

GPS Jamming Devices Pose Many Threats (w/ Video)

(PhysOrg.com) -- The latest GPS jamming devices are now being used by car thieves in the UK to render stolen cars and trucks undetectable by law enforcement. These devices also pose a threat to airlines and ...

Feb 25, 2010 report
4.6 / 5 (10) 16 | with audio podcast

Secure radio signal for central locking

(PhysOrg.com) -- Remote central locking is among the most convenient aspects of modern motoring. Transmission of the radio signal that activates the system is not particularly secure, however. A new encryption ...

Feb 01, 2010
5 / 5 (1) 0

Making it easier to save energy

Fraunhofer scientists are developing programs that help show at a glance how much energy devices are consuming. At the GSMA Mobile World Congress in Barcelona, the researchers will be showing how a cell phone can help save ...

Jan 15, 2010
2 / 5 (2) 0

The Sun's Sneaky Variability

Every 11 years, the sun undergoes a furious upheaval. Dark sunspots burst forth from beneath the sun's surface. Explosions as powerful as a billion atomic bombs spark intense flares of high-energy radiation. ...

Oct 28, 2009
4.8 / 5 (11) 5

Astronomers seek to explore the cosmic Dark Ages

No place seems safe from the prying eyes of inquisitive astronomers. They've traced the evolution of the universe back to the "Big Bang," the theoretical birth of the cosmos 13.7 billion years ago, but there's still a long ...

Oct 15, 2009
4.9 / 5 (10) 1

Wi-Fi signals can see through walls

(PhysOrg.com) -- Researchers at the University of Utah, USA, have discovered that variations in signal strengths in wireless networks can be used to "see" movements of people on the other side of walls or ...

Oct 05, 2009 weblog
4.3 / 5 (8) 2