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Old 04-12-2011, 07:36 AM   #2451
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http://journal.borderlands.com/2011/...roject-hermes/



An Introduction to Project Hermes

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In the fall of 1951 the former director of BSRA, Meade Layne, received a diagram and description of an untried electronic device whose avowed purpose was to stimulate ESP. Meade published this in the Nov—Dec 1951 Round Robin. Some of the Associates, and no doubt others, made haphazard attempts to construct a working model; but only one, Associate Ed John of San Francisco, reported any positive success with it. He claimed it worked to some degree with everyone on whom he tried it; but his report was so at variance with the failure of all the rest that nothing was really settled, one way or the other Apparently no systematic attempt was made to calibrate the variable condenser, so that uniform responses of the brain for different settings could be predicted. Nor did anyone come up with the maximum and minimum frequencies of the coils, as specified in the original diagram or in Ed John’s modifications. So in effect, in this year of 1960, we are starting from scratch in reviving Project Hermes; though your present director of BSRA hopes that electronics have come so far in eight years that the original questions can be easily answered now.
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Old 04-13-2011, 08:55 AM   #2452
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http://www.guardian.co.uk/books/2011...allenged-books

Brave New World among top 10 books Americans most want banned

Huxley's vision of a totalitarian future comes third on American Library Association's list of 2010's 'most challenged' books
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Old 04-13-2011, 11:19 AM   #2453
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Old 04-13-2011, 11:45 AM   #2454
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http://www.realitysandwich.com/bnote...ency_baltimore

I am trying to do the same thing here.
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Old 04-13-2011, 01:45 PM   #2455
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http://www.disinfo.com/2011/04/the-n...mandatory-ads/

The Newest Kindle Has Mandatory Ads

Posted by moezilla on April 12, 2011

KindleIs this the free market at work – or a horrible preview of things to come?

Amazon just announced a new $114 Kindle Wireless Reading Device — $25 cheaper than any other model — but it comes with a big catch.

It’s the Kindle “with special offers,” showing sophisticated advertisements in the screensavers, along with shopping discounts which display at the bottom of the screen.
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Posted in: Advertising, Book Publishing, Books, Kindle, Technology
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Old 04-13-2011, 01:48 PM   #2456
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http://www.disinfo.com/2011/04/livin...world-of-lies/

Living In A World Of Lies

Posted by Joshua Davis on April 10, 2011
Pinocchio by Jim Dine. Photo: Mrkgrd (CC)

Pinocchio by Jim Dine. Photo: Mrkgrd (CC)

Lies have an interesting quality. Repeated often enough, lies become accepted as truth, and it must be said that our lives and our minds are filled with them. Filled with half-truths that are also half-lies, credulously accepted though unfounded rumors, filled with the lies of advertisers sowing insecurity and selling false satisfaction. But not all lies are created equal, some lies are useful, even necessary.

Our physical perception of the world is a kind of lie. Where science tells us there are swarms of swirling electrons, protons and neutrons we see a table or a dog. Our eyes lie to us by omission, registering only a narrow spectrum of all the light streaming into them. These are what we might call necessary and useful lies, simplifications of the truth that allow us to make sense of and interact with the world around us.

But many lies are not so benign. Consider the lies that most of us accept about personal success and happiness. We could sum these up with a catch-phrase from 1980’s pop culture: “Greed is good.”

This is a succinct summation of economic thought in its current, mainstream variety. Economists assume that the world would work best if everyone tried to maximize their individual utility, where “utility” means, essentially, money and stuff. If everyone tries to accumulate as much wealth as they can, competing with everyone else for scarce resources, then everything will automatically work out for the best, as if guided by “an invisible hand.”

In reality, greed leads to unnatural shortages, as some people capture and hoard vast amounts of wealth, while many more are left to scratch out an existence from the ever-dwindling remains. Greed leads to ill will among people: callousness in those who are successful in their hoarding and resentment in those left out.

Greed is not good, as pretty much every religion has been telling us for millennia. It’s a little embarrassing that they have to tell us at all, and even more so that we so often refuse to listen.

Some lies are more subtle, like the lies we tell ourselves about our own powerlessness. We see the news filled with natural disasters and human suffering, wars, corruption, and social and environmental devastation, and we think we can do nothing, or at least not very much. We give a little bit to the Red Cross or United Way and think that we’ve done all we can. But this is a lie.

We live in a rich country where many of us have much more than we need, but rather than use our personal resources to improve the world, we buy an iPad and have discussions about what the government should do or what some corporation should do. We rely on those “in power” to fix things, denying that we ourselves have power. We undermine our power by squandering it on mindless indulgences and we deny having it because we are frightened of the responsibility that having it implies. We all remember what Uncle Ben said to Peter Parker, “With great power comes great responsibility.”

We have the power, much more than we like to admit, to make the world a profoundly better place. But if we are to exercise this power we will need to re-evaluate our lives, reconsider what it is that truly leads to happiness, recognize the oft-repeated lies of our culture for what they are: lies. The truth is inevitably more complex than the lie, and this can be frightening, but we must be courageous if we are indeed concerned for the fate of our fellow humans, for our brother and sister creatures and for the planet that we all share. If we are concerned with freedom, with recognizing and reclaiming our own power, we must be relentless in exposing and rejecting lies wherever they may be, whether plastered across a billboard or hidden in the recesses of our own hearts.
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Old 04-13-2011, 01:51 PM   #2457
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http://kookscience.tumblr.com/post/4...-event-horizon

http://kookscience.tumblr.com/photo/...0329vct1qa5pif


Vyacheslav I. Dokuchaev asks “Is there life inside black holes?” in a recent research paper, speculating that “advanced civilizations may inhabit the interiors of supermassive black holes, being invisible from the outside and basking in the light of the central singularity and orbital photons.” This thought experiment reminds us of the hypothesis that we could be living inside a black hole, and what better place to hide from prying eyes and unwanted attention?

Image: “A Race Round a Black Hole”, via NASA.
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Old 04-15-2011, 10:27 AM   #2458
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http://inhabitat.com/breaking-solar-...lls-obsolete/#

Researchers at the University of Michigan have made a discovery about the behavior of light that could change solar technology forever. Stephen Rand, a professor in the departments of Electrical Engineering and Computer Science, Physics and Applied Physics and William Fisher, a doctoral student in applied physics, discovered that light, when traveling at the right intensity through a material such as glass that does not conduct electricity, can create magnetic fields that are 100 million times stronger than previously thought possible. In these conditions, the resulting magnetic field is strong enough to rival a strong electric effect. The result is an “optical battery, which could lead to “a new kind of solar cell without semiconductors and without absorption to produce charge separation”, according to Rand.

Read more: BREAKING: Solar Power Breakthrough Could Render Photovoltaic Cells Obsolete | Inhabitat - Green Design Will Save the World
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Old 04-15-2011, 11:12 AM   #2459
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http://www.gizmag.com/flynano-microl...ircraft/18411/

The 70 kg US$39,000 FlyNano Electric Microlight




Finnish aeronautical engineer Aki Suokas launched a remarkable new single-seat aircraft this week at Aero Friedrichshafen. The FlyNano is made entirely of carbon fiber composite, lands and takes off on water, and weighs just 70 kilograms ready to fly. Three variants are available: a 20kW electric-only version, and petrol-engined 24 bhp and 35 bhp models, the latter proposed as a racing version. The Flynano tops out at over 140 km/h, with a service ceiling of 3 km. If you think that's remarkable, the most expensive of the three variants ex-factory and ex-VAT is just EUR 27,000 (US$39,000) and deliveries begin three months from now.

The FlyNano's wingspan is nearly five meters, it has a maximum take off weight of 200 kg and it has a speed range of 70 km/h to 140 km/h. FlyNano's true airspeed is about 140 km/h at 75% power with a theoretical operational distance of 70 kilometers.

The almost exclusive use of carbon fiber has enabled the Flynano to come in at under the magic 70 kg weight limit which determines how a new plane is legally classified. In this class in most jurisdictions, there's no license required and a minimum of red tape. Of course there's no passenger and no luggage, but it already rates as a breakthrough in aviation cost-performance.

Though the electric version has a limited range of 40 kilometers, the low speed torque and minimal vibration of the electric motor enables the low-speed four-blade prop to be whisper quiet, ensuring you'll get no complaints from the neighbors.

A transferable buy option will get you a place in the 2011 delivery queue at EUR 900 (US$1300), with 30% payable on delivery confirmation and the remainder prior to delivery. There's also an optional purpose-built trailer and storage box for the Flynano which retails for EUR 5,300 (US$7,700).
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Old 04-15-2011, 11:19 AM   #2460
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http://www.infinitereality.org/
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Old 04-15-2011, 11:42 AM   #2461
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http://www.engadget.com/2011/04/14/m...e-songs-video/

Magnetic fields shut down speech, permit love songs (video)

Science, Alt
Magnetic fields shut down speech, permit love songs (video)
By Jesse Hicks posted Apr 14th 2011 5:56PM
You already know the strange powers of Stephin Merritt, but today we're talking about real magnetic fields. Powerful electromagnets, it turns out, can do remarkable things to the brain -- in this case, prevent a volunteer from reciting "Humpty Dumpty." The carefully directed magnets temporarily disrupt the brain's speech centers; the volunteer can still sing the rhyme using different areas of the brain, but simply can't overcome a series of stammers when trying to merely recite it. Of course, it's not all mad scientist applications: the UK team experimenting with transcranial magnetic stimulation (TMS) thinks it can help us understand and treat migraines (as we've seen before with the Migraine Zapper), depression, and ADHD, among other ailments. But improving physical well-being doesn't make for nearly as entertaining media -- see the British inflict some involuntary quiet time in the video above.
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Old 04-15-2011, 11:44 AM   #2462
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Quote:
Originally Posted by alkemical View Post
http://inhabitat.com/breaking-solar-...lls-obsolete/#

Researchers at the University of Michigan have made a discovery about the behavior of light that could change solar technology forever. Stephen Rand, a professor in the departments of Electrical Engineering and Computer Science, Physics and Applied Physics and William Fisher, a doctoral student in applied physics, discovered that light, when traveling at the right intensity through a material such as glass that does not conduct electricity, can create magnetic fields that are 100 million times stronger than previously thought possible. In these conditions, the resulting magnetic field is strong enough to rival a strong electric effect. The result is an “optical battery, which could lead to “a new kind of solar cell without semiconductors and without absorption to produce charge separation”, according to Rand.

Read more: BREAKING: Solar Power Breakthrough Could Render Photovoltaic Cells Obsolete | Inhabitat - Green Design Will Save the World

http://www.physorg.com/news/2011-04-...-magnetic.html

Solar power without solar cells: A hidden magnetic effect of light could make it possible

(PhysOrg.com) -- A dramatic and surprising magnetic effect of light discovered by University of Michigan researchers could lead to solar power without traditional semiconductor-based solar cells.

The researchers found a way to make an “optical battery,” said Stephen Rand, a professor in the departments of Electrical Engineering and Computer Science, Physics and Applied Physics.

In the process, they overturned a century-old tenet of physics.

“You could stare at the equations of motion all day and you will not see this possibility. We’ve all been taught that this doesn’t happen,” said Rand, an author of a paper on the work published in the Journal of Applied Physics. “It’s a very odd interaction. That’s why it’s been overlooked for more than 100 years.”

Light has electric and magnetic components. Until now, scientists thought the effects of the magnetic field were so weak that they could be ignored. What Rand and his colleagues found is that at the right intensity, when light is traveling through a material that does not conduct electricity, the light field can generate magnetic effects that are 100 million times stronger than previously expected. Under these circumstances, the magnetic effects develop strength equivalent to a strong electric effect.

“This could lead to a new kind of solar cell without semiconductors and without absorption to produce charge separation,” Rand said. “In solar cells, the light goes into a material, gets absorbed and creates heat. Here, we expect to have a very low heat load. Instead of the light being absorbed, energy is stored in the magnetic moment. Intense magnetization can be induced by intense light and then it is ultimately capable of providing a capacitive power source.”

What makes this possible is a previously undetected brand of “optical rectification,” says William Fisher, a doctoral student in applied physics. In traditional optical rectification, light’s electric field causes a charge separation, or a pulling apart of the positive and negative charges in a material. This sets up a voltage, similar to that in a battery. This electric effect had previously been detected only in crystalline materials that possessed a certain symmetry.

Rand and Fisher found that under the right circumstances and in other types of materials, the light’s magnetic field can also create optical rectification.

“It turns out that the magnetic field starts curving the electrons into a C-shape and they move forward a little each time,” Fisher said. “That C-shape of charge motion generates both an electric dipole and a magnetic dipole. If we can set up many of these in a row in a long fiber, we can make a huge voltage and by extracting that voltage, we can use it as a power source.”

The light must be shone through a material that does not conduct electricity, such as glass. And it must be focused to an intensity of 10 million watts per square centimeter. Sunlight isn’t this intense on its own, but new materials are being sought that would work at lower intensities, Fisher said.

“In our most recent paper, we show that incoherent light like sunlight is theoretically almost as effective in producing charge separation as laser light is,” Fisher said.

This new technique could make solar power cheaper, the researchers say. They predict that with improved materials they could achieve 10 percent efficiency in converting solar power to useable energy. That’s equivalent to today’s commercial-grade solar cells.

“To manufacture modern solar cells, you have to do extensive semiconductor processing,” Fisher said. “All we would need are lenses to focus the light and a fiber to guide it. Glass works for both. It’s already made in bulk, and it doesn’t require as much processing. Transparent ceramics might be even better.”

In experiments this summer, the researchers will work on harnessing this power with laser light, and then with sunlight.

The paper is titled “Optically-induced charge separation and terahertz emission in unbiased dielectrics.” The university is pursuing patent protection for the intellectual property.

Provided by University of Michigan (news : web)
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Old 04-15-2011, 02:40 PM   #2463
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Are these guys posters on this board?
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Old 04-16-2011, 10:06 AM   #2464
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! Maybe!!!

I've been observing humans lately. Very interesting.

Just interesting in how tribes and clans operate. Interesting to see how some of our animal side resides in our behaviours. While this doesn't mean it's all a negative, i've seen lots of good...and the potential.

Want to know who is in charge at work?

Don't look for titles...watch and you'll see who is in charge.
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Old 04-16-2011, 11:26 AM   #2465
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Quote:
Originally Posted by alkemical View Post
http://www.physorg.com/news/2011-04-...-magnetic.html

Solar power without solar cells: A hidden magnetic effect of light could make it possible

(PhysOrg.com) -- A dramatic and surprising magnetic effect of light discovered by University of Michigan researchers could lead to solar power without traditional semiconductor-based solar cells.

The researchers found a way to make an “optical battery,” said Stephen Rand, a professor in the departments of Electrical Engineering and Computer Science, Physics and Applied Physics.

In the process, they overturned a century-old tenet of physics.

“You could stare at the equations of motion all day and you will not see this possibility. We’ve all been taught that this doesn’t happen,” said Rand, an author of a paper on the work published in the Journal of Applied Physics. “It’s a very odd interaction. That’s why it’s been overlooked for more than 100 years.”

Light has electric and magnetic components. Until now, scientists thought the effects of the magnetic field were so weak that they could be ignored. What Rand and his colleagues found is that at the right intensity, when light is traveling through a material that does not conduct electricity, the light field can generate magnetic effects that are 100 million times stronger than previously expected. Under these circumstances, the magnetic effects develop strength equivalent to a strong electric effect.

“This could lead to a new kind of solar cell without semiconductors and without absorption to produce charge separation,” Rand said. “In solar cells, the light goes into a material, gets absorbed and creates heat. Here, we expect to have a very low heat load. Instead of the light being absorbed, energy is stored in the magnetic moment. Intense magnetization can be induced by intense light and then it is ultimately capable of providing a capacitive power source.”

What makes this possible is a previously undetected brand of “optical rectification,” says William Fisher, a doctoral student in applied physics. In traditional optical rectification, light’s electric field causes a charge separation, or a pulling apart of the positive and negative charges in a material. This sets up a voltage, similar to that in a battery. This electric effect had previously been detected only in crystalline materials that possessed a certain symmetry.

Rand and Fisher found that under the right circumstances and in other types of materials, the light’s magnetic field can also create optical rectification.

“It turns out that the magnetic field starts curving the electrons into a C-shape and they move forward a little each time,” Fisher said. “That C-shape of charge motion generates both an electric dipole and a magnetic dipole. If we can set up many of these in a row in a long fiber, we can make a huge voltage and by extracting that voltage, we can use it as a power source.”

The light must be shone through a material that does not conduct electricity, such as glass. And it must be focused to an intensity of 10 million watts per square centimeter. Sunlight isn’t this intense on its own, but new materials are being sought that would work at lower intensities, Fisher said.

“In our most recent paper, we show that incoherent light like sunlight is theoretically almost as effective in producing charge separation as laser light is,” Fisher said.

This new technique could make solar power cheaper, the researchers say. They predict that with improved materials they could achieve 10 percent efficiency in converting solar power to useable energy. That’s equivalent to today’s commercial-grade solar cells.

“To manufacture modern solar cells, you have to do extensive semiconductor processing,” Fisher said. “All we would need are lenses to focus the light and a fiber to guide it. Glass works for both. It’s already made in bulk, and it doesn't require as much processing. Transparent ceramics might be even better.”

In experiments this summer, the researchers will work on harnessing this power with laser light, and then with sunlight.

The paper is titled “Optically-induced charge separation and terahertz emission in unbiased dielectrics.” The university is pursuing patent protection for the intellectual property.

Provided by University of Michigan (news : web)
Very, very cool stuff.
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Old 04-18-2011, 07:29 AM   #2466
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I wonder if this is some of the "zero point" energy that was spoken of.
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Old 04-18-2011, 08:17 AM   #2467
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http://www.engadget.com/2011/04/18/f...ens-door-to-u/

Science
First light wave quantum teleportation achieved, opens door to ultra fast data transmission
By Richard Lai posted Apr 18th 2011 8:33AM




Mark this day, folks, because the brainiacs have finally made a breakthrough in quantum teleportation: a team of scientists from Australia and Japan have successfully transferred a complex set of quantum data in light form. You see, previously researchers had struggled with slow performance or loss of information, but with full transmission integrity achieved -- as in blocks of qubits being destroyed in one place but instantaneously resurrected in another, without affecting their superpositions -- we're now one huge step closer to secure, high-speed quantum communication. Needless to say, this will also be a big boost for the development of powerful quantum computing, and combine that with a more bedroom friendly version of the above teleporter, we'll eventually have ourselves the best LAN party ever.
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Old 04-18-2011, 09:34 AM   #2468
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http://www.engadget.com/2011/04/18/f...ens-door-to-u/

Science
First light wave quantum teleportation achieved, opens door to ultra fast data transmission
By Richard Lai posted Apr 18th 2011 8:33AM




Mark this day, folks, because the brainiacs have finally made a breakthrough in quantum teleportation: a team of scientists from Australia and Japan have successfully transferred a complex set of quantum data in light form. You see, previously researchers had struggled with slow performance or loss of information, but with full transmission integrity achieved -- as in blocks of qubits being destroyed in one place but instantaneously resurrected in another, without affecting their superpositions -- we're now one huge step closer to secure, high-speed quantum communication. Needless to say, this will also be a big boost for the development of powerful quantum computing, and combine that with a more bedroom friendly version of the above teleporter, we'll eventually have ourselves the best LAN party ever.
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sourceUniversity of New South Wales
This will be viable in just a few years now. They just need to plug everything together.
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Old 04-18-2011, 09:59 AM   #2469
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I wonder if this is some of the "zero point" energy that was spoken of.
Doesn't seem related, the zero point energy is the lowest energy a particle can have in vacuum, from quantum mechanics that energy can be calculated and it turns out it is not 0, but slightly above 0. Some people have suggested that if we could get particles in the lowest energy state and have them interact and impart their non-0 energy to other particles they would have to still keep an energy above 0, and that idea could be provided by a mechanism not yet known but possibly infinite which would allow for a sustainable energy supply.

As best as I can work out the idea of zero point energy utilization is nonsense.
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Old 04-18-2011, 10:00 AM   #2470
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http://www.engadget.com/2011/04/18/f...ens-door-to-u/

Science
First light wave quantum teleportation achieved, opens door to ultra fast data transmission
By Richard Lai posted Apr 18th 2011 8:33AM




Mark this day, folks, because the brainiacs have finally made a breakthrough in quantum teleportation: a team of scientists from Australia and Japan have successfully transferred a complex set of quantum data in light form. You see, previously researchers had struggled with slow performance or loss of information, but with full transmission integrity achieved -- as in blocks of qubits being destroyed in one place but instantaneously resurrected in another, without affecting their superpositions -- we're now one huge step closer to secure, high-speed quantum communication. Needless to say, this will also be a big boost for the development of powerful quantum computing, and combine that with a more bedroom friendly version of the above teleporter, we'll eventually have ourselves the best LAN party ever.
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sourceUniversity of New South Wales
I love these optic experiments, it is like a model train set.
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Old 04-18-2011, 10:23 AM   #2471
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Doesn't seem related, the zero point energy is the lowest energy a particle can have in vacuum, from quantum mechanics that energy can be calculated and it turns out it is not 0, but slightly above 0. Some people have suggested that if we could get particles in the lowest energy state and have them interact and impart their non-0 energy to other particles they would have to still keep an energy above 0, and that idea could be provided by a mechanism not yet known but possibly infinite which would allow for a sustainable energy supply.

As best as I can work out the idea of zero point energy utilization is nonsense.
Very interesting.

I wasn't sure if this magnetic property would be included in the energy that scientists were hunting for an "energy" field that could be tapped into.
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Old 04-19-2011, 08:01 AM   #2472
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http://www.dailymail.co.uk/sciencete...#ixzz1Jv6OTOBm

A new Clockwork Orange? The marketing gadget that tracks brainwaves as you watch TV

Would you feel comfortable if market researchers could know your every thought?

A headband designed by San Francisco firm EmSense can sense your brainwaves as you have reactions to watching something and then record the data for researchers.

The process of measuring your reaction to something is known as ‘quantitative neurometrics’ and it can be carried out as you watch a computer or television screen.



The firm is launching its ‘in-home’ research panel employing the EmBand monitoring technology in an attempt to get better feedback on emotional responses.

The EmBand can also measure how much attention you are paying, or your ‘cognitive engagement’, by measuring brainwave activity, reported technology site Venture Beat.


More...

Taking it very easy: The 'mobile armchair' that can be reclined and driven using a Kinect motion controller

The firm does studies by asking respondents to voluntarily share their information.

This has been compared to the controversial 1971 film A Clockwork Orange, where authorities try to psychologically modify the behaviour of a teenage thug.

But the big difference with EmSense is that the test subjects are volunteers.



It says market research firms want to measure emotional responses more accurately to get better reactions to advertising, creative concepts, packaging and shopping.

EmSense ships the user a kit with an EmBand wireless headset and a wireless receiver for use with his or her PC computer, directing them to a specific web page.

The firm, which has 80 employees, was founded by technologists from Hewlett-Packard and the Massachusetts Institute of Technology in 2004.

It has tested more than 100,000 respondents in 25 countries, reported Venture Beat.
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Old 04-19-2011, 08:07 AM   #2473
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Old 04-19-2011, 08:12 AM   #2474
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http://www.kurzweilai.net/nanotech-f...e-regeneration

Nanotech for tissue regeneration
April 18, 2011 by Editor

Researchers have developed new nanotechnologies for wound healing and blood-vessel tissue, and have determined how ribosomes insert a growing protein into a cellular membrane.


Nanofiber Sphere


Nanofiber spheres carry cells into wounds to grow tissue (credit: Peter Ma)

Nanofiber spheres for wound healing

Scientists at the University of Michigan have made star-shaped, biodegradable polymers that can self-assemble into hollow, nanofiber spheres that biodegrade when injected with cells into wounds, while the cells live on to form new tissue.

The nanofibrous hollow spheres are combined with cells and then injected into the wound. The nanofiber spheres are slightly bigger than the cells they carry.

The cells start growing easily in the wound because the nanofiber spheres provide an environment in which the cells naturally thrive.

During testing, the nanofiber repair group grew as much as three to four times more tissue than the control group.

Regenerating blood supply

Researchers at The University of Western Ontario have discovered a strategy for stimulating the formation of highly functional new blood vessels in tissues that are starved of oxygen.

The researchers developed a strategy in which fibroblast growth factor 9 (FGF9) is delivered at the same time that the body is making its own effort at forming new blood vessels in vulnerable or damaged tissue.

The result is that an otherwise unsuccessful attempt at regenerating a blood supply becomes a successful one.

How ribosomes insert membranes into cells
Membrane Protein


Cryogenic electron microscope images were used to construct an atom-by-atom model of the system that threads a growing protein into a cellular membrane (credit: L. Brian Stauffer)

Computational theoretical scientists at the University of Illinois and experimental scientists at University of Munich have provided the first detailed atom-by-atom view of the elaborate chemical and mechanical interactions that allow the ribosome to insert a growing protein into a cellular membrane.

The first study used cryo-electron microscopy to image one moment in the insertion process. The researchers were able to get a picture of how the ribosome, membrane, membrane channel, and newly forming protein come together to complete the insertion process.

They found that regions of the membrane channel actually reach into the ribosome to help funnel the emerging protein into the channel. Depending on the type of protein being built, the channel will thread it all the way through the membrane to secrete it or open a “side door” that directs the growing protein into the interior of the membrane.

In the second study, the researchers found that proteins get inserted into the membrane in two stages. First, the ribosome “pushes” the growing protein into the membrane channel, and then, in a second step, the protein enters the membrane.

Ref.: The University of Michigan work is scheduled for advanced online publication in Nature Materials

Ref.: Klaus Schulten et al., Cryo-EM structure of the ribosome-SecYE complex in the membrane environment, Nature Structural & Molecular Biology, 2011

Ref.: Klaus Schulten et al., Free-energy cost for translocon-assisted insertion of membrane proteins, PNAS, February 11, 2011

Ref.: J. Geoffrey Pickering et al., Fibroblast growth factor 9 delivery during angiogenesis produces durable, vasoresponsive microvessels wrapped by smooth muscle cells, Nature Biotechnology, April 17, 2011
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Old 04-19-2011, 08:43 AM   #2475
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Quote:
Originally Posted by alkemical View Post
I wonder if this is some of the "zero point" energy that was spoken of.
Check this out


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