Bronco_Beerslug
10-20-2006, 08:38 AM
Well, OK, not quite but getting pretty close.
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Scientists create cloak of invisibility
By RANDOLPH E. SCHMID, AP Science Writer Fri Oct 20, 2:22 AM ET
WASHINGTON - Scientists are boldly going where only fiction has gone before — to develop a Cloak of Invisibility. It isn't quite ready to hide a Romulan space ship from Capt. James T. Kirk or to disguise Harry Potter, but it is a significant start and could show the way to more sophisticated designs.
http://d.yimg.com/us.yimg.com/p/nm/20061019/2006_10_19t162812_450x299_us_science_invisibility. jpg?x=380&y=252&sig=3IB9Q7hzoh0e5DWKtpYeUA--
A photo of the 'metamaterial' cloak, released to Reuters on October 19, 2006, which deflects microwave beams so they flow around a 'hidden' object inside with little distortion, making it appear almost as if nothing were there at all. (Duke University/Handout/Reuters)
In this first successful experiment, researchers from the United States and England were able to cloak a copper cylinder.
It's like a mirage, where heat causes the bending of light rays and cloaks the road ahead behind an image of the sky.
"We have built an artificial mirage that can hide something from would-be observers in any direction," said cloak designer David Schurig, a research associate in Duke University's electrical and computer engineering department.
For their first attempt, the researchers designed a cloak that prevents microwaves from detecting objects. Like light and radar waves, microwaves usually bounce off objects, making them visible to instruments and creating a shadow that can be detected.
Cloaking used special materials to deflect radar or light or other waves around an object, like water flowing around a smooth rock in a stream. It differs from stealth technology, which does not make an aircraft invisible but reduces the cross-section available to radar, making it hard to track.
The new work points the way for an improved version that could hide people and objects from visible light.
Conceptually, the chance of adapting the concept to visible light is good, Schurig said in a telephone interview. But, he added, "From an engineering point of view it is very challenging."
CONT (http://tinyurl.com/u7atk)
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Scientists create cloak of invisibility
By RANDOLPH E. SCHMID, AP Science Writer Fri Oct 20, 2:22 AM ET
WASHINGTON - Scientists are boldly going where only fiction has gone before — to develop a Cloak of Invisibility. It isn't quite ready to hide a Romulan space ship from Capt. James T. Kirk or to disguise Harry Potter, but it is a significant start and could show the way to more sophisticated designs.
http://d.yimg.com/us.yimg.com/p/nm/20061019/2006_10_19t162812_450x299_us_science_invisibility. jpg?x=380&y=252&sig=3IB9Q7hzoh0e5DWKtpYeUA--
A photo of the 'metamaterial' cloak, released to Reuters on October 19, 2006, which deflects microwave beams so they flow around a 'hidden' object inside with little distortion, making it appear almost as if nothing were there at all. (Duke University/Handout/Reuters)
In this first successful experiment, researchers from the United States and England were able to cloak a copper cylinder.
It's like a mirage, where heat causes the bending of light rays and cloaks the road ahead behind an image of the sky.
"We have built an artificial mirage that can hide something from would-be observers in any direction," said cloak designer David Schurig, a research associate in Duke University's electrical and computer engineering department.
For their first attempt, the researchers designed a cloak that prevents microwaves from detecting objects. Like light and radar waves, microwaves usually bounce off objects, making them visible to instruments and creating a shadow that can be detected.
Cloaking used special materials to deflect radar or light or other waves around an object, like water flowing around a smooth rock in a stream. It differs from stealth technology, which does not make an aircraft invisible but reduces the cross-section available to radar, making it hard to track.
The new work points the way for an improved version that could hide people and objects from visible light.
Conceptually, the chance of adapting the concept to visible light is good, Schurig said in a telephone interview. But, he added, "From an engineering point of view it is very challenging."
CONT (http://tinyurl.com/u7atk)