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username
Title: owner of a lonely heart
Joined: Jul 06 2007
Location: phoenix, az usa
Posts: 16136
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ScienceDaily (June 3, 2010) — Chinese researchers have successfully built an electromagnetic absorbing device for microwave frequencies. The device, made of a thin cylinder comprising 60 concentric rings of metamaterials, is capable of absorbing microwave radiation, and has been compared to an astrophysical black hole (which, in space, soaks up matter and light).
The research published June 3 in New Journal of Physics (co-owned by the Institute of Physics and German Physical Society), shows how the researchers utilised the special properties of metamaterials, a class of ordered composites which can distort light and other waves.
Qiang Cheng and Tie Jun Cui of the State Key Laboratory of Millimeter Waves at Southeast University in Nanjing, China, designed and fabricated their absorbing device, officially called an "omnidirectional electromagnetic absorber," using 60 strips of circuit board arranged in concentric layers coated in copper. Each layer is imprinted with alternating patterns, which resonate or don't resonate in electromagnetic waves.
The designed device can trap and absorb electromagnetic waves coming from all directions by spiraling the radiation inwards and converting its energy into heat with an absorption rate of 99%. Hence it behaves like an "electromagnetic black body" or an "electromagnetic black hole."
At the moment, the device only works with microwaves, but the researchers are planning to develop a black hole for visible light next.
The current results could find some applications in microwaves. As the researchers write, "The good agreement between theoretical and experimental results has shown the excellent ability for metamaterials as the candidate to construct artificial omnidirectional absorbing devices.
"Since the lossy core can transfer electromagnetic energies into heat energies, we expect that the proposed device could find important applications in thermal emitting and electromagnetic-wave harvesting." |
http://current.com/technology/92468733_china-artificial-black-hole-like-device.htm
http://www.sciencedaily.com/releases/2010/06/100603091829.htm
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| Klimbatize wrote: |
| I'll eat a turkey sandwich while blowing my load |
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Blackout
Title: Captain Oblivious
Joined: Sep 01 2007
Location: That Rainy State
Posts: 10376
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Wonder if you could make black hole bombs... 
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SoldierHawk
Moderator
Title: Warrior-Poet
Joined: Jan 15 2009
Location: San Diego, CA
Posts: 6113
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awsgames
Joined: May 29 2010
Posts: 168
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They do have little tiny microscopic blacks holes going on everywhere that are so small that they cancel themselves and wither away to nothing before they can do any damage. I'm sure using that logic they can get them to go away before they do anything they aren't supposed to.
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GPFontaine
Joined: Dec 06 2007
Location: Connecticut
Posts: 11244
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There is a certain order to things and we (humans) are fucking it all up.
First we should learn how to travel far enough away so that black holes can't fuck up our planet. Then we can play with them. If we do it in reverse then we are screwed.
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aeonic
Title: Sporadic Poster
Joined: Nov 19 2009
Location: Kissimmee, FL
Posts: 2747
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I can totally see China pulling a Mr. Burns and trying to steal the sunlight unless everyone bows in obeisance.
Then again, considering how much of the US infrastructure China already owns, are we really that far off anyhow?
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Who likes role-playing games? Me. Way too goddamn much. |
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