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Solar flares set to wreak havoc on GPS signals

By Vladislav Savov

The sun’s activity isn’t usually a hot topic around these parts, but when it threatens to derail satellite navigation services around the world, it must surely take center stage. UK researchers have corroborated Cornell’s 2006 warning that our solar system’s main life-giver is about to wake up and head toward a new solar maximum — a period of elevated surface activity and radiation. It is precisely that radiation, which can be perceived in the form of solar flares, that worries people with respect to GPS signaling, as its effects on the Earth’s ionosphere are likely to cause delays in data transmission from satellites to receivers and thereby result in triangulation errors. Still, it’s more likely to be “troublesome than dangerous,” but inaccuracies of around 10 meters and signal blackouts that could last for hours are being forecast in the absence of any intervening steps being taken. So yes, you now have another reason not to trust your GPS too much.

[Thanks, Mike]

Solar flares set to wreak havoc on GPS signals originally appeared on Engadget on Wed, 10 Feb 2010 06:02:00 EST. Please see our terms for use of feeds.

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British surgeons using radiation beams to halt macular degeneration

By Darren Murph

We’ve seen more eyesight restoration efforts than we could easily count, but rather than tooting their horn about some theoretical discovery, boffins at Kings College Hospital in London are actually putting their hard work to use on real, live human brings. The new process, which goes by the name brachytherapy, is a one-off treatment for macular degeneration. In essence, surgeons carefully light up a beam of radiation within the eye for just over three minutes, which kills harmful cells without damaging anything else. A trial is currently underway in order to restore eyesight in some 363 patients, and everything thus far leads us to believe that the process is both safe and effective. As for costs? The procedure currently runs £6,000 ($9,889), but that’s still not awful when you consider that existing treatments involving injections run £800 per month. Hop past the break for a video report.

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British surgeons using radiation beams to halt macular degeneration originally appeared on Engadget on Mon, 23 Nov 2009 07:28:00 EST. Please see our terms for use of feeds.

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Full body scanners at airports reveal your junk

By Scott Merrill

Full-body scanners are being tested in a variety of airports. I didn’t get the pleasure of using one on my recent trip to Japan , unfortunately, so I can’t provide a first-hand account of what it’s like.

Website rates best and worst cellphones by radiation output levels — how does yours stack up?

By Laura June

You’re surely aware that your cellphone bleeds radiation into your face the whole time you’re on the phone with your mom, best friend or lover, right? Yes, it’s a fact we try not to think about most of the time, but now there’s a tool out there on the internets for the more reality-facing folks among us. The Environmental Working Group’s launched a website dedicated to rating cellphones on their radiation output alone. Ranking highly (meaning they put out the lowest levels of radiation) are the Motorola RAZR V8, and AT&T’s Samsung Impression. In fact, it seems that Samsung is cranking out the healthiest phones these days! Phones with poor showings includes T-Mobile’s myTouch 3G and the Blackberry Curve 8830. So hit the read link and tell us, how does your phone rate?

[Via bookofjoe]

Filed under: Cellphones