News tagged with signal jamming
Female birds 'jam' their mates' flirtatious songs
Mar 12, 2009 |
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When a single female is nearby, female antbirds will sing over the songs of their male partners in an apparent attempt to keep their messages from getting through, according to a new report published online on March 12th ...
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iRobot Unveils Morphing Blob Robot (w/ Video)
Oct 15, 2009 |
4.4 / 5 (25) |
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(PhysOrg.com) -- iRobot's latest robot is unique on many levels. The doughy blob moves by inflating and deflating - a new technique its developers call "jamming." As the researchers explain in the video below, ...
Stealthy, Versatile, and Jam Resistant Antennas made of Gas
Nov 12, 2007 |
4.2 / 5 (40) |
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A new antenna made of plasma (a gas heated to the point that the electrons are ripped free of atoms and molecules) works just like conventional metal antennas, except that it vanishes when you turn it off.
Researcher 'Shows the Voice' in Swallowing Disorders
Oct 28, 2009 |
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(PhysOrg.com) -- Using his background in aerospace engineering and signal processing, a UC researcher is finding new ways to help physicians listen to their patients: by teaching them to look at the signal, ...
First Modernized GPS Satellite Built By Lockheed Martin Launched
Sep 26, 2005 |
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The U.S. Air Force has launched, and safely inserted into orbit, the first modernized Global Positioning System satellite, built by Lockheed Martin, aboard a Delta II rocket on Sept. 25, from Cape Canaveral Air Force Station, ...
The Link Between Birdsong And Human Language
Medicine & Health / Neuroscience
Nov 10, 2009 |
4.7 / 5 (7) |
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Scientists studying how Bengalese finches use sets of syllables to communicate are a step closer to understanding how humans develop and use vocabulary. After studying the neural networks in finch brains, ...
Cell phone jammers raise question: who controls the airwaves?
Electronics / Consumer & Gadgets
Nov 09, 2007 |
4.6 / 5 (36) |
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As more people go about chatting obliviously on their cell phones in public places, foreign companies have enjoyed increasing US sales of a new, albeit illegal, device: the cell phone jammer. When you turn ...
Is neighbor's Wi-Fi signal free for me to use?
Nov 11, 2009 |
3.7 / 5 (3) |
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Q. The other day, my Internet service went down as it does from time to time. But this particular time, I needed to check my e-mail for an important reply I was expecting. After some frustrating time passed, I happened to ...
Laser-based device offers alternative to video surveillance
May 17, 2007 |
4.3 / 5 (14) |
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Surveillance systems take on a new look with a technology developed by researchers at the Department of Energy’s Oak Ridge National Laboratory.
Compressing photonic signals for greater bandwidth
Nov 03, 2009 |
4.5 / 5 (6) |
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Cornell researchers have developed an ingenious method to time-compress optical signals. The process could enable optical communication systems to carry many more bits per second or could also be used to generate ...
Explained: The Discrete Fourier Transform
Nov 25, 2009 |
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(PhysOrg.com) -- In 1811, Joseph Fourier, the 43-year-old prefect of the French district of Isčre, entered a competition in heat research sponsored by the French Academy of Sciences. The paper he submitted ...
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