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Scientists Closer To Invisibility Cloak
Posted by
timothy
on Mon Aug 11, 2008 08:49 AM
from the excellent-for-parties dept.
from the excellent-for-parties dept.
Aviran was one of many readers to submit news of a just-announced development in the ongoing quest to develop a working invisibility cloak, writing: "Scientists say they are a step closer to developing materials that could render people and objects invisible. Researchers have demonstrated for the first time they were able to cloak three-dimensional objects using artificially engineered materials that redirect light around the objects. Previously, they only have been able to cloak very thin two-dimensional objects" Reader bensafrickingenius adds a link to coverage at the Times Online, and notes that "the world's two leading scientific journals, Science and Nature, are expected to report the results this week." Tjeerd adds a link to a Reuters' story carried by Scientific American.
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Science: Tsunami Invisibility Cloak 172 comments
BuzzSkyline writes "New Scientist is reporting on a lab-scale experiment that may lead to a tsunami invisibility cloak, which could protect islands, open-ocean platforms and even coastlines from dangerous waves by effectively making them invisible to tsunamis. The technology is based on the same sorts of negative index of refraction ideas that some physicists are exploring as they try to make an optical invisibility cloak, except that it works with water instead of light."
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Science: A Step Toward an Invisibility Cloak 54 comments
Technology Review has a writeup on the latest advance in the lab towards an invisibility cloak made of metamaterials, described this week in Science. We've been following this technology since the beginning. The breakthrough is software that lets researchers design materials that are both low-loss and wideband. "The cloak that the researchers built works with wavelengths of light ranging from about 1 to 18 gigahertz — a swath as broad as the visible spectrum. No one has yet made a cloaking device that works in the visible spectrum, and those metamaterials that have been fabricated tend to work only with narrow bands of light. But a cloak that made an object invisible to light of only one color would not be of much use. Similarly, a cloaking device can't afford to be lossy: if it lets just a little bit of light reflect off the object it's supposed to cloak, it's no longer effective. The cloak that Smith built is very low loss, successfully rerouting almost all the light that hits it."
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I would have claimed 1st (Score:5, Funny)
I would have claimed 1st, but someone appears to be cloaked.
Re:I would have claimed 1st (Score:5, Funny)
His name was Robert Paulson. [imdb.com]
There fixed that for you.
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Re:I do claim 1st (Score:5, Funny)
Don't know about the patent, but I can claim prior art. I have an invisible cloak that I wear all the time at home. I used to wear it in public, but kept getting arrested.
Is there an emperor out there looking for an outfit for a parade? I have a spare that I'm willing to sell.
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Currently under "Cliche Movie Plot" (CPM) testing (Score:5, Funny)
correction: (Score:5, Insightful)
Re:correction: (Score:5, Funny)
The fact that this is modded insightful is frightening in itself.
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arms race (Score:5, Funny)
And the locker room will be full of girls wearing invisibility cloaks.
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Pictures? (Score:5, Funny)
At first I was going to complain about the lack of pictures, but then I realized they wouldn't be too revealing anyway.
Re:Pictures? (Score:5, Funny)
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Re:Pictures? (Score:5, Funny)
Has it occured to anyone that once you take the cloak off you had better not set it down?
It really adds a whole new level to losing your keys if you set the cloak on them by mistake.
On a brighter note voyeurism just got easier..
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Re:Pictures? (Score:5, Funny)
Mr. Nesbitt has learnt the first lesson of not being seen... not to stand up. However, he has chosen a very obvious piece of cover.
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Science writing at its finest (Score:5, Funny)
Very thin 2D objects eh? Nice.
Re:Science writing at its finest (Score:5, Funny)
It has trouble with very thick 2D objects.
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Nature's Abstract (Score:5, Informative)
"the world's two leading scientific journals, Science and Nature, are expected to report the results this week."
You can find the Nature abstract here [nature.com]. And if you have a subscription, you can read the full research and see the data they collected from experiments.
According to the Ars Technica article on this [arstechnica.com], the Science link will be here [doi.org].
There seems to be a few more papers and articles on this but if you're interested you can search for optical metamaterials with negative refractive indexes.
enage cloaking device (Score:5, Interesting)
Re:enage cloaking device (Score:5, Interesting)
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Re:enage cloaking device (Score:5, Insightful)
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Old "news". Nothing to see here.... (Score:5, Insightful)
This was posted in Pharyngula yesterday. The usual prescient commenters noted that nowhere on the researchers' pages was there active speculation about an "invisibility cloak", and it was probably just some reporters going wacky over the possibilities. http://scienceblogs.com/pharyngula/2008/08/get_your_invisibility_cloak_he.php [scienceblogs.com]
Look over there, a cloaked eye-catching headline (Score:5, Informative)
This story has popped up here and there in the press today, but when I actually RTFA the actual breakthrough is negative refractive index materials, in the visible spectrum.
The application is not invisible tanks and infantry, but microscopy.
See here for photoshopped image that enhances the misleading headline http://news.bbc.co.uk/1/hi/sci/tech/7553061.stm [bbc.co.uk]
Woot! (Score:5, Funny)
I dunno about this claim. (Score:5, Funny)
Invisibility cloak (Score:5, Funny)
I'll believe it when I see it.
Actually it was invented several months ago... (Score:5, Funny)
now they just can't find the blasted thing.
Re:War Application (Score:5, Informative)
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Re:War Application (Score:5, Interesting)
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