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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I remember one of my schoolmasters demonstrating this effect of induced high frequency current. If the frequency and distance are adjusted so that the inductive and induced currents are out of phase, the disc will be repelled.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Thanks friend haldav for your phrase. - You are very wise. - War to the cancer. he is our enemy. - greetings. - luis donato .-
----------------------------------------[Edit 2 times, last edit by Former Member at Jul 26, 2007 3:14:09 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
haldav
or this LONDON (AFP) - Scientists have discovered a ground-breaking way of levitating ultra small objects, which may revolutionise the design of micro-machines, a new report says. Physicists said they can create "incredible levitation effects" by manipulating so-called Casimir force, which normally causes objects to stick together by quantum force. The phenomenon could be used to improve the performances of everyday devices ranging from car airbags to computer chips, say Professor Ulf Leonhardt and Dr Thomas Philbin from Saint Andrews University. Casimir force -- discovered in 1948 and first measured in 1997 -- can be seen in a gecko's ability to stick to a surface with just one toe. Now the British scientists say they can reverse the Casimir force to cause an object to repel rather than attract another in a vacuum. "The Casimir force is the ultimate cause of friction in the nano world, in particular in some micro-electromechanical systems," said Leonhardt, writing in the August issue of New Journal of Physics. "Micro or nano machines could run smoother and with less or no friction at all if one can manipulate the force," he added. And he added: "In order to reduce friction in the nanoworld, turning nature's stickiness into repulsion could be the ultimate remedy. Instead of sticking together, parts of micromachinery would levitate." Leonhardt stressed that the practise is possible only for micro-objects. But he underlined that, although in principle it may one day be possible to levitate humans, that day is a long way off. "At the moment, in practice it is only going to be possible for micro-objects with the current technology, since this quantum force is small and acts only at short ranges," he said."For now, human levitation remains the subject of cartoons, fairytales and tales of the paranormal." Their research was to be published in the New Journal of Physics. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Friend haldav:
----------------------------------------This is really exciting. - “Casimir force”. - thanks to inform to me on the article. - a brotherly hug. -luis donato.-ciencia cosmo global [Edit 1 times, last edit by Former Member at Aug 14, 2007 1:38:00 AM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Here is the link for that Harold this should give you a lift
![]() Physicists have solved mystery of levitation Hola amigo Luis ![]() |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
If you've been wishing you could have an out-of-body experiencewithout actually, you know, dying, there is now a hardware simulation. Researchers have used virtual reality goggles to give subjects the sensation that their point of view was outside their bodies. Said Dr. Susan Blackmore, psychologist and visiting lecturer at the University of the West of England, "This has at last brought OBEs into the lab and tested one of the main theories of how they occur. Scientists have long suspected that the clue to these extraordinary, and sometimes life-changing, experiences lies in disrupting our normal illusion of being a self behind our eyes, and replacing it with a new viewpoint from above or behind."
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
This gets cooler and cooler. J.K.Rowling had better look to her laurels! Mind you this is one way to get an O.B.E. without making some special contribution!
----------------------------------------[Edit 1 times, last edit by Former Member at Aug 31, 2007 12:03:07 PM] |
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