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Science

Submission + - T-rays used to see through opaque material. (physorg.com) 2

dumuzi writes: T-rays may make X-rays obsolete as a means of detecting bombs on terrorists or illegal drugs on traffickers, among other uses, contends a Texas A&M physicist who is helping lay the theoretical groundwork to make the concept a reality. In addition to being more revealing than X-rays in some situations, T-rays do not have the cumulative possible harmful effects." Alexey Belyanin focuses his research on terahertz, otherwise known as THz or T-rays, which he says is the most under-developed and under-used part of the electromagnetic spectrum. It lies between microwave radiation and infrared (heat) radiation.

"THz radiation can penetrate through opaque dry materials. It is harmless and can be used to scan humans," Belyanin says. "Unfortunately, until recently the progress in THz technology has been hampered by a lack of suitable sources and detectors.""The highlight of our results is observations of interference of magnetoplasmons. By tiny changes in the applied magnetic field or temperature, we can make plasma waves amplify or cancel each other. This makes the whole sample either completely opaque or transparent to the incident THz radiation.

Linux

Submission + - Geek Squad Wouldn't Honor Netbook's Warranty (consumerist.com)

supersloshy writes: The Consumerist reports an incident where an anonymous reader's netbook's protection plan was apparently voided when he installed Linux on it. "The manager of the Geek Squad informed me that installing Ubuntu Linux on my machine voided my warranty, and that I could only have it serviced if the original Windows installation was restored.", says the anonymous reader. However, his problem was because his "touchpad and power adapter had been broken", which is clearly a hardware issue. He re-installed Windows so he could have them repair his netbook, but they insisted that Linux caused the problem and kicked him out of the store.
Idle

Submission + - Web-controlled snow machine (torchbox.com)

An anonymous reader writes: We've mashed up a lot of technologies we normally use (AJAX, Django, SSH, and Python) with a few that we don't (special effects equipment and DMX controllers). The result is a snow machine controlled by the internet — we'll be blogging about our full setup once we've finished being buried under all the snow.

Oh, and don't worry it's not real snow. It's shredded paper that we'll be composting once we shut down for Christmas.

We'll certainly be enjoying a white Christmas, we hope you do too!

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