QuoteCell phones were placed next to the left and right ears of the volunteers. Scans of the brain were taken with only the right cell phone turned on and with the sound muted for 50 minutes. Brain scans were taken again with both phones turned off.
The results showed that glucose metabolism increased in the area of the brain near the antenna of the phone that was turned on, but not near the one that was turned off. However, the researchers determined that the results were of "unknown clinical significance," meaning they couldn't tell whether the increased brain activity actually entails any health risks.
QuoteMeanwhile, in Europe, Vodafone's Colao said that he feels comfortable with how European regulators have handled the issue.
"The way that regulators have dealt with the Net neutrality issue in Europe is healthy," he said. "It recognizes the competitive environment. And I think it's something that U.S. regulators can learn from."
But he said that issues dealing with inter-carrier compensation, or the way operators compensate one other for accessing networks, need to be revisited. Specifically, the government tariffs that are charged to access networks between countries are too high, which leads to higher prices for wireless consumers.
QuoteIt’s 30 micrometers long - that’s 30 millionths of a meter - eight micrometers high and has a wavelength of 200 micrometers. This makes the laser considerably smaller than the wavelength of the light it emits - a scientific first.
Quote"I do have trepidation about switching from Verizon to AT&T, but I figure Steve Jobs wouldn't have made the deal if he couldn't back it up," she said. "Verizon has one of the largest networks, but AT&T has the iPhone." The 36-year-old, who owns a graphic design business with her husband, said she needs the iPhone for e-mailing, Web access, and sending and receiving files--all functions she could easily do with another device like a Treo or BlackBerry, which are already sold through Verizon Wireless. But as a Mac user for more than a decade, she admits she is drawn to anything created by Apple and Apple CEO Steve Jobs.
QuoteIn a sense, these long-range Wi-Fi antennas would perform the same function as WiMax, a long-range wireless technology that many, including Intel, are experimenting with now. The difference is that a WiMax tower costs about $15,000 to $20,000. The long range Wi-Fi towers might only cost $700 to $800. Additionally, long range Wi-Fi could spread faster, Brewer said. The radio spectrum employed by WiMax is regulated by local telecommunications authorities. Putting up towers or offering services can require getting governmental permission.
QuoteTypically, systems that use electromagnetic radiation, such as radio antennas, are not suitable for the efficient transfer of energy because they scatter energy in all directions, wasting large amounts of it into free space. To overcome this problem, the team investigated a special class of "non-radiative" objects with so-called "long-lived resonances". When energy is applied to these objects it remains bound to them, rather than escaping to space. "Tails" of energy, which can be many metres long, flicker over the surface.
QuoteIt's happening now for a combination of reasons. The WiMedia Alliance is planning to make the technology known as "ultrawideband," or UWB, work among a wide variety of consumer electronics devices, from PCs and printers to external hard drives and MP3 players. The USB Implementers Forum, the 1394 Trade Association and the Bluetooth Special Interest Group (SIG) have chosen the WiMedia Alliance's version of UWB technology as the foundation for their next-generation networking technology. UWB technology can deliver data rates at up to 480 megabits per second at around 3 meters, with speeds dropping off as the range grows to a limit of about 10 meters. Real-world speeds will probably be a little slower, but this is as fast as the wired version of USB 2.0 and much faster than current Wi-Fi networks are capable of transmitting data.