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Subject: US defense industry helping China developing cloaking material
Nanheyangrouchuan    1/15/2009 9:35:59 PM
W T F? "" BREAKING NEWS Tokyo stocks rise on Wall Street rebound, weaker yen+ Ditched jetliner: A boom, and then a jolt Bush defends tumultuous terms in farewell speech Republicans upset over children's health bill Weekend, holiday expressway tolls to be 1,000 yen for unlimited travel+ EPA finds toxins throughout Columbia Basin Moored boat sinks from Alaska rig; 14 evacuated AP source: Red Sox, Youkilis agree to 4-year deal Kremlin snubbed as Russia, Ukraine plan gas crisis talks Suspects in alleged lesbian rape plead not guilty Obama arrives at Blair House Hudson River hero is ex-Air Force fighter pilot Lack of Fidel Castro sightings fuel health-crisis rumor mill Amy Poehler ready for a sitcom change of pace Vt. police: Poodle left inside vehicle for 19 days GM expects 20% drop in industry-wide new car sales in U.S. in 2009+ Qaeda feels unsafe near Pakistan border: CIA chief Killer may have stabbed professor while wearing gloves+ Belden Announces Update to Full Year 2008 Outlook AP source: Red Sox, Youkilis agree to 4-year deal All u.s. world politics business sports entertainment sci/tech health odd video images .tv Big Hollywood AP: Breaking | Alerts | World | US | Politics | Business | Entertainment | Life | Science | Odd | Sports | Tech Science closing in on cloak of invisibility Jan 15 02:04 PM US/Eastern 39 Comments '06 Flashback: Duke University Scientists Demonstrate First Working 'Invisibility Cloak' WASHINGTON (AP) - They can't match Harry Potter yet, but scientists are moving closer to creating a real cloak of invisibility. Researchers at Duke University, who developed a material that can "cloak" an item from detection by microwaves, report that they have expanded the number of wavelengths they can block. Last August the team reported they had developed so-called metamaterials that could deflect microwaves around a three-dimensional object, essentially making it invisible to the waves. The system works like a mirage, where heat causes the bending of light rays and cloaks the road ahead behind an image of the sky. The researchers report in Thursday's edition of the journal Science that they have developed a series of mathematical commands to guide the development of more types of metamaterials to cloak objects from an increasing range of electromagnetic waves. "The new device can cloak a much wider spectrum of waves—nearly limitless—and will scale far more easily to infrared and visible light. The approach we used should help us expand and improve our abilities to cloak different types of waves," senior researcher David R. Smith said in a statement. The new cloak is made up of more than 10,000 individual pieces of fiberglass arranged in parallel rows. The mathematical formulas are used to determine the shape and placement of each piece to deflect the electromagnetic waves. The research was supported by Raytheon Missile Systems, the Air Force Office of Scientific Research, InnovateHan Technology, the National Science Foundation of China, the National Basic Research Program of China and National Science Foundation of Jiangsu Province, China.
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VelocityVector       1/15/2009 10:10:57 PM

A cloak must refresh.  At a rate different from surrounding environ.  Across area.  Defender can sample and reach conclusions very rapidly if equipped.  Loser technology in most spaces against an advanced foe.


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Nanheyangrouchuan       1/16/2009 1:07:06 PM
The technology is still new and far from battle ready (or is it?). But the fact that we are helping the Enemy of Man improve its war fighting ability is sickening to me and should be to all of you.
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warpig       1/16/2009 1:48:23 PM
This obviously has ramifications for military applications, and possibly somewhere down the road very serious ones.  The very idea that the name Raytheon appears in the same sentence as Chinese research institutes for something like this is revolting enough, but that there is USAF cooperation with the Chinese is truly sickening.
Perhaps it can be explained if it is shown that it's the Chinese who came up with the initial idea, and we're working with them to learn what we can from it.  Otherwise, our people ought to have to explain why they shouldn't be in danger of being castrated over cooperation like this.
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WarNerd       1/17/2009 5:16:34 AM
From the article it appears more like they have come up a mathematical formula that describes how the material will have shaped to work at any given frequency.  Whether or not they can come up with ways of fabricating those shapes remains to be seen.
Current samples of the materials are only work in the microwave range due to the limitations of the fabrication techniques.  Getting to higher frequencies will probably require developing nano-tech fabrication techniques.
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