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Invisibility is quite literally, 'here'...
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Dr. Nürburg

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PostPosted: Mon Apr 27, 2009 6:22 pm    Post subject: Reply with quote

Following further research I think The Brits are only experimenting with camera optics.

However according to Michio Kaku scientists have now managed to do it with visible light.

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PostPosted: Mon May 25, 2009 12:26 pm    Post subject: Reply with quote

lol...but not even a giggle ...
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PostPosted: Sun May 31, 2009 10:21 pm    Post subject: Reply with quote

Very nice but it's a penny that the tank's pic. isn't real. It would be nice to see a direct application of this technology like on that image and not just on those cylinders.
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Dr. Nürburg

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PostPosted: Sun May 31, 2009 10:41 pm    Post subject: Reply with quote

Well metamaterials bend light around an object. Up until about a year ago they were only able to bend the microwave spectrum, but as I said earlier, according to Michio Kaku, scientists have managed to bend the entire spectrum.

Basically, in one of his talks, he explains that an actual man-sized cylinder was constructed out of the new metamaterial, then a soldier placed inside. The soldier apparantly became completely invisible.

Give it a year and I expect we'll see some kind of demonstration of the new material.

I'd be suprised if things became totally visibly undetectable. I expect that in practicality, if a cloaked object were to move, even though light is travelling around it, cause and effect will create some kind of motion ripple between the foreground and the background as the cloaked object moves.

But heh, you'd never notice if it was standing still. Smile

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PostPosted: Sun May 31, 2009 11:56 pm    Post subject: Reply with quote

you alwasy have some breaking news mr jepps se haha
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Dr. Nürburg

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PostPosted: Fri Mar 19, 2010 4:46 pm    Post subject: Reply with quote

Significant development made achieving 360 3D invisibility.

http://news.bbc.co.uk/1/hi/sci/tech/8574923.stm
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PostPosted: Fri Mar 19, 2010 8:49 pm    Post subject: Reply with quote

il believe it when i truly see it
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PostPosted: Sat Mar 20, 2010 12:49 pm    Post subject: Reply with quote

Mr Jepps Se wrote:
Significant development made achieving 360 3D invisibility.

http://news.bbc.co.uk/1/hi/sci/tech/8574923.stm


Thank you for that link! I'm impressed that you were able to remember that topic despite creating it over a year ago! Surprised

As for the topic itself; I am glad that they are making progress towards making something invisible although one should keep the more sobering sentences of that article in mind:



Quote:
Currently, the rods can be made as small as 200 nanometres. To hide a bump from visible light would require rods as small as 10 nanometres.

And, as Mr Ergin explained, there is a limit to how small a point light can be focused down to.

"You could say, 'why not just make [the rods] smaller?' but it's not that easy to scale these structures down. Fabrication techniques have their limits," he said.
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PostPosted: Sat Mar 20, 2010 1:36 pm    Post subject: Reply with quote

garyoak99 wrote:
Mr Jepps Se wrote:
Significant development made achieving 360 3D invisibility.

http://news.bbc.co.uk/1/hi/sci/tech/8574923.stm


Thank you for that link! I'm impressed that you were able to remember that topic despite creating it over a year ago! Surprised

As for the topic itself; I am glad that they are making progress towards making something invisible although one should keep the more sobering sentences of that article in mind:



Quote:
Currently, the rods can be made as small as 200 nanometres. To hide a bump from visible light would require rods as small as 10 nanometres.

And, as Mr Ergin explained, there is a limit to how small a point light can be focused down to.

"You could say, 'why not just make [the rods] smaller?' but it's not that easy to scale these structures down. Fabrication techniques have their limits," he said.


even after reading the article i dont see anything truly large like a person being able to become invisible for a really long time, and thats the only way i would be interested in it.
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Dr. Nürburg

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PostPosted: Sat Mar 20, 2010 5:07 pm    Post subject: Reply with quote

Yeah, but these new 'metamaterials' are the first scientific proof that theoretically we can make things invisible to visible light. Gradually, more and more proof from developments are making this a reality.

Continuous immediate satisfaction will bore you after a while - witnessing the evolution of new technology is just, if not more so exciting in my opinion.

Gives us something to aspire to.

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PostPosted: Sun Mar 21, 2010 3:42 pm    Post subject: Reply with quote

not sure if i missed it but did the article mention how long the invisibility would last or if at some point it would wear off?
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PostPosted: Sun Mar 21, 2010 4:58 pm    Post subject: Reply with quote

No it doesn't wear off - it's a material.. as long as the construction of the fabric is not artificially manipulated it will continue to work forever.
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PostPosted: Sun Mar 21, 2010 5:53 pm    Post subject: Reply with quote

pshobbes479 wrote:
even after reading the article i dont see anything truly large like a person being able to become invisible for a really long time, and thats the only way i would be interested in it.


I would never say this development is uninteresting on its own though.


Quote:
But Professor Hess said that this was a great achievement and these photonic materials could be used in the development of lenses and in light storage and optical circuitry.
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PostPosted: Sun Mar 21, 2010 11:44 pm    Post subject: Reply with quote

Mr Jepps Se wrote:
No it doesn't wear off - it's a material.. as long as the construction of the fabric is not artificially manipulated it will continue to work forever.


well now see that peaks my interest a little more.
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PostPosted: Mon Mar 22, 2010 1:32 pm    Post subject: Reply with quote

Lmao that's awesome. Meh I miss Harry Potter, I wish there were move books to be written =\\
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