Physicists have 'solved' mystery of levitation
2007-08-10 0:00

By Roger Highfield | telegraph.co.uk


In theory the discovery could be used to levitate a person

Levitation has been elevated from being pure science fiction to science fact, according to a study reported today by physicists.

In earlier work the same team of theoretical physicists showed that invisibility cloaks are feasible.

Now, in another report that sounds like it comes out of the pages of a Harry Potter book, the University of St Andrews team has created an 'incredible levitation effects by engineering the force of nature which normally causes objects to stick together.

Professor Ulf Leonhardt and Dr Thomas Philbin, from the University of St Andrews in Scotland, have worked out a way of reversing this pheneomenon, known as the Casimir force, so that it repels instead of attracts.

Their discovery could ultimately lead to frictionless micro-machines with moving parts that levitate But they say that, in principle at least, the same effect could be used to levitate bigger objects too, even a person.

The Casimir force is a consequence of quantum mechanics, the theory that describes the world of atoms and subatomic particles that is not only the most successful theory of physics but also the most baffling.

The force is due to neither electrical charge or gravity, for example, but the fluctuations in all-pervasive energy fields in the intervening empty space between the objects and is one reason atoms stick together, also explaining a dry glue effect that enables a gecko to walk across a ceiling.

Now, using a special lens of a kind that has already been built, Prof Ulf Leonhardt and Dr Thomas Philbin report in the New Journal of Physics they can engineer the Casimir force to repel, rather than attact.

Because the Casimir force causes problems for nanotechnologists, who are trying to build electrical circuits and tiny mechanical devices on silicon chips, among other things, the team believes the feat could initially be used to stop tiny objects from sticking to each other.

Prof Leonhardt explained, The Casimir force is the ultimate cause of friction in the nano-world, in particular in some microelectromechanical systems.

Such systems already play an important role - for example tiny mechanical devices which triggers a car airbag to inflate or those which power tiny 'lab on chip devices used for drugs testing or chemical analysis.

Micro or nano machines could run smoother and with less or no friction at all if one can manipulate the force. Though it is possible to levitate objects as big as humans, scientists are a long way off developing the technology for such feats, said Dr Philbin.

The practicalities of designing the lens to do this are daunting but not impossible and levitation could happen over quite a distance.

Prof Leonhardt leads one of four teams - three of them in Britain - to have put forward a theory in a peer-reviewed journal to achieve invisibility by making light waves flow around an object - just as a river flows undisturbed around a smooth rock.

Article from: Physicists have 'solved' mystery of levitation

John Hutchison - The Hutchison-Effect



The Hutchison Effect



Related Articles
Invisibility cloaks are in sight
Demonstration and the mathematics of invisibility cloaking (Video)
Now you see it, now you don't: cloaking device is not just sci-fi
The Hutchison Effect - American Antigravity


Latest News from our Front Page

"Multiculturalism Is A Moral Duty For Germany"
2015-05-05 21:53
According to the head of the Jewish Council, Josef Schuster it's a moral duty for Germany to take in immigrants from the third world. This because of the "barbaric" history of Germany. It was during the 70 year commemoration of the liberation of Dachau that Josef Schuster proclaimed his harsh “sentence” against the Germans. He said to the German newspaper Junge Freiheit ...
The rape of Berlin
2015-05-05 18:25
The USSR's role in the defeat of Nazi Germany World War Two 70 years ago is seen as the nation's most glorious moment. But there is another story - of mass rapes by Soviet soldiers of German women in the dying days of the war. Some readers may find this story disturbing. Dusk is falling in Treptower Park on the outskirts of ...
Where the Islamic State Gets Its Weapons
2015-05-04 21:26
Early one morning in late February, a European investigator working in Kobani, the northern Syrian city that for months had been a battleground between Kurdish fighters and militants from the Islamic State, stepped outside the building where he was staying and saw something unusual. A Kurd on the street was carrying a long black assault rifle that the investigator thought ...
Garland Shooter Elton Simpson 'Handled' By Paid FBI Informant
2015-05-05 4:49
In our story released late last night, we posed this question to our readers: “Were these supposed ‘dead gunmen’ part of the drill, or were they patsies handled by a counter-terrorism federal ‘informant’?“ We didn’t know it at the time, but it turns out that we were right. Image: ‘Garland Gunman’ Elton Simpson, adjusting his CCTV camera at his apartment in Phoenix, AZ. Last ...
What is Sacred to Americans?
2015-05-05 4:32
The free speech fest in Texas that resulted in the police shooting of two apparent terrorists at the Curtis Culwell Center in Garland marks growing prominence and qualified support for the movement for free speech for anti-Muslim satire, led by the American Freedom Defense Initiative, a well-financed New York group. No similar type of organization in America dares to test ...
More News »