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Posts with tag waves

Magnetic signals could cure chronic insomnia


Make no mistake, there's a plethora of devices out there aimed squarely at rudely disrupting your nap, but a technique that utilizes a gaudy head wrap and magnetic pulses could make the process of conking out a whole lot easier. Apparently, scientists can use relatively standard medical equipment in order to "stimulate the brain with harmless magnetic pulses," which essentially penetrate the nerves that control a type of deep sleep called "slow-wave activity." By forcing the brain to conjure these waves, it helps trigger deep sleep in even the "most chronic insomniac," and researchers are hoping that these methods could be used to create a machine that lets weary individuals get one fabulous power nap. Until then, however, may we suggest wading through every last Intel roadmap presentation you can find without ever losing focus, as this little trick seems to work quite well in corporate settings.

[Via Spluch]

Radiofrequency treatment curbs asthma attacks

Sure, there's quite a few way to circumvent the effects of asthma, but a new development coming out of McMaster University in Canada suggests that radiofrequency treatment can actually curb the amount of asthma attacks suffered by asthmatics. The device, which "uses radio waves to heat the muscle lining of patients' airways," is used to administer a trio of sessions, and while the actual root cause is still unknown, it seems to cause a reduction in the smooth muscle lining the airways, subsequently making breathing less of a chore. The probe isn't the most comfortable, however, as it must first make its way through your nose or mouth in order to reach the lung airways, after which the tip is "heated using radio waves." The procedure is known as bronchial thermoplasty, and while the funding company (Asthmatx) has yet to elicit a thumbs-up from the FDA, it could certainly become a viable alternative for asthma sufferers. It's about time these free-flying transmissions made up for the harm they've caused, eh?

Japan's earthquake warning system tested out


It's a good thing that Japan's Meteorological Agency actually had the nationwide earthquake warning system ready to rock in March, as the fiber optic system was put into use this month in an attempt to warn citizens of an imminent tsunami. Reportedly, a "huge tremor" struck and triggered the system, which allowed warnings to be beamed out en masse "within a single minute." Although the system was tested before in false alarm fashion, this was the first time it had been used in a legitimate emergency, and it beat the previous options "by around one to two minutes." Sadly, it still wasn't quick enough to save everyone from the 6.9-magnitude quake, as 170 people suffered various injuries while one individual passed away, but the statistics could've been much worse had the speedy system not kicked in at all.

Sonic fingerprinting could safeguard masterpieces, detect fakes

We know, we're suckers for cheesy art, but we give props where props are due for the well designed, masterfully engineered pieces as well. While we doubt the Digital Stag is atop any thief's list of things to swipe, there's a decent chance the Italian funeral urn Cratere dei Niobidi is. This urn spurned (ahem) a restorer and a geophysicist to envision sonic tomography as a means to protecting authentic works of art and giving museums and art buyers alike a way to spot fakes. The system works by attaching a network of sensors in and around the artifact, and when tapped with a rubber hammer, computer software can record the sonic fingerprint that will only match up with the original. Additionally, the waves could inform restorers if a segment of a structure is weaker than the eye can tell, giving them extra time to build reinforcements on ancient buildings, walls, etc. The chance of such a system ever being used outside of highly trafficked museums, however, is slim, primarily due to the $19,000 to $26,000 price range that the system falls in, not to mention the "trained staff" (read: loyal and innocent) required to run it.

Broadcast radio crosses the century mark

We'll admit, there's not a whole of gizmos invented 100 years ago that we still rely on (and bicker about) on a near-daily basis, but broadcast radio has managed to stay in our homes, cars, hearts, and complaint letters for a full century. Exactly one hundred years ago today, Reginald Fessenden fired up his transmitting station at Brant Rock, Massachusetts in order to broadcast a "brief speech," followed by an Edison phonograph recording of Handel's Largo." He also sent out a few other holiday jams and well-wishes to those spending Christmas "onboard US Navy and United Fruit Company ships equipped with Fessenden's wireless receivers." Fessenden earned more than 500 patents in his lifetime, including credit for the "radio telephone, a sonic depth finder, and submarine signaling devices." So while the FCC tries to regulate it, and we prefer the cleaner, less ad-filled satellite rendition of radio, we're still raising our glasses to a technology that's changed technology over the past hundred years, and here's to a hundred more.

[Via Slashdot]

Researchers develop metamaterial with negative refractive index

We've got next-to-invisible objects and cameras with ridiculously large sensors, and thanks to a team of brilliant researchers over in Germany, now we've got "an exotic material with a negative refractive index for visible light." Gunnar Dolling and his colleagues at the University of Karlsruhe in Germany have created a metamaterial with layers of silver sandwiching a thin sliver of nonconducting magnesium fluoride on a glass sheet, and once an array of square holes were etched in, his tests showed that the "structure had a negative refractive index of -0.6 for light with a wavelength of 780-nanometers," besting the previous record of 1,400-nanometers. While the scientific babble may not mean much to you, the long and short of it is that this discovery could "lead to further breakthroughs in invisibility cloaks, which could hide objects from the human eye" and make escaping your troubles quite a bit easier. Moreover, the technology could be used in "superlenses" to see details "finer than the wavelength of visible light," but Dolling is reportedly more interested in studying the effects of his discovery than attempting to build any mystical devices, which is probably for the good of mankind, anyway.

[Via Slashdot]

Human WiFi sniffer is every geek's dream woman

Alright Europe, things were dubious enough when you erased children's rights to wireless access after believing that the radiation a good chunk of internet users have been subjecting themselves to for years is suddenly cause for concern, but this is a bit much. Undoubtedly crossing the line between caution and hypochondria, a British author now claims that "electromagnetic waves" emitted by the WiFi setup in her crib "left her feeling exhausted, nauseous and sleepless." Moreover, she even states that she is so sensitive to 802.11 radiation that "she can instantly tell whether it is installed in a particular room." Aside from the above symptoms, Kate Figes (pictured) described a feeling of being "prodded by 1,000 fingers" when entering a room laced in WiFi, which presumably garnered all sorts of (understandable) skepticism. Sure, we could understand the backlash associated with cellphone signals causing all sorts of turmoil in your noggin, but if WiFi is the true brain cell killer, we're all pretty much on death row.

[Via TechDirt]



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