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Amherst Researchers Create Magnetic Monopoles
An anonymous reader writes "Nearly 85 years after pioneering theoretical physicist Paul Dirac predicted the possibility of their existence, an international collaboration led by Amherst College Physics Professor David S. Hall '91 and Aalto University (Finland) Academy Research Fellow Mikko Möttönen has created, identified and photographed synthetic magnetic monopoles in Hall's laboratory on the Amherst campus. The groundbreaking accomplishment paves the way for the detection of the particles in nature, which would be a revolutionary development comparable to the discovery of the electron." That's quite a step beyond detecting monopoles; the
Nature abstract is online, but the full paper is paywalled.
But how many slashdot stories about fusion reactors, methanol fuel cells, or flying cars has actually been more than investor fleecing vaporware?
.. and can certainly help in the fight against the Ur-Quan!
A government is a body of people notably ungoverned - AC
"The secrets of magnetism"
Requires Superstring Theory, Silksteel Alloys
Leads to Nanominiaturization, Unified Field Theory
Enables: Terraform Mag Tube
..it does an attractive screen saver.
North and South Pole-specific compasses. I should patent that.
(magentic north be damned)
Trolling is a art,
http://larryniven.wikia.com/wiki/Known_Space_Technology
Well, that happened. ....again.
Next?
As the name suggests, however, a magnetic monopole is a magnetic particle possessing only a single, isolated pole—a north pole without a south pole, or vice versa.
Damn we have to rewrite the textbooks on electromagnetism.
No more div B = 0.
someone wasn't playing a trick on them and was turning the electric can opener on and off in the other room?
We will bankrupt ourselves in the vain search for absolute security. -- Dwight D. Eisenhower
I maintain nonetheless that yin-yang dualism can be overcome.
With sufficient enlightenment we can give substance to any distinction: mind without body, north without south, pleasure without pain. Remember, enlightenment is a function of willpower, not of physical strength.
—Chairman Sheng-ji Yang,
“Essays on Mind and Matter”
Time to start building those Mag Tubes!
Does this contradict previous electromagnetic theory? I always thought that a magnetic field had two poles and doesnt that this is not true sort of throw EMF theories into the rubbish? Also, would this allow for the development of an over unity, energy from nothing generation machine. Perhaps someone could provide an in the nutshell description of EMF theory and relation of electric field to magnetic for the benefit of others here.
they haven't really found a magnetic monopole. They've created a long skinny solenoid with ends that are far enough apart that they look like independent monopoles.
Great physics, terrible summary.
You could run an electric utility, four railroads, and get out of jail free if this can be produced to scale.
Gently reply
Sweet! On to Nanominiaturization and Unified Field Theory.
Except that as far as I understand it, those classical equations are unaffected. It's a quantum-scale effect.
A successful API design takes a mixture of software design and pedagogy.
Magnetic monopoles, how do they work? My guess is the other pole is directed through higher spacial dimensions.
Damn we have to rewrite the textbooks on electromagnetism.
No more div B = 0.
might want to read the paper more closely. still have div B = 0
http://phys.org/news/2013-05-artificial-magnetic-monopoles.html
These are pseudoparticles. They're like magnetic monopoles in almost all ways, but they arise from the collective motion of other particles rather than actually existing in and of themselves (think about having an electron hole, versus having an actual positron). The breakthrough is that they've made the first pseudoparticle in a quantum mechanical regime that allows it to behave consistently with the real particle.
No kidding!!! What do you say at this point?
I should say, "quasiparticles".
No kidding!!! What do you say at this point?
Yes! Sheldon is vindicated!!
but isn't it a real breakthrough in levitation (Theorically)?
Meaning, that if they have a south monopole somewhere in their "extremely cold gas", someplace else within the same gas has a north monopole. Then just consider the line linking both to be the magnet.
Call us back when they can separate them by splitting the "extremely cold gas" into 2 containers, in such a way that one container has the south pole, and the other the north pole, and both can be moved arbitrarily far from each other.
My previous supplier has left me high and dry and I can't finish my perpetual motion machine without one of these. Can I get a discount on more than one? Or do I have to buy them one by one to avoid them neutralizing each other?
"Now, I doubt any of you would prefer a rolled up newspaper as a weapon against a dictator or a criminal intruder."
The spinor order parameter corresponding to the Dirac monopole14,17 is generated by an adiabatic spin rotation in response to a time-varying magnetic field, B(r, t). Similar spin rotations have been used to create multiply quantized vortices18 and skyrmion spin textures19. The order parameter Y(r, t)5y(r, t)f(r, t) is the product of a scalar order parameter, y, and a spinor, f~ðfz1,f0,f{1T¼^ jfi, where fm5Æmjfæ represents the mth spinor component along z. The condensate is initially spin-polarized along the z axis, that is, f5(1, 0, 0)T. Following the method introduced in ref. 14, a magnetic field Bðr,t~bqðxx^zy^y{2z^zzBzðt^z is applied, where bq.0 is the strength of a quadrupole field gradient and Bz(t) is a uniform bias field. The magnetic field zero is initially located on the z axis at z~Bzð0=(2bq)?Z, where Z is the axial Thomas–Fermi radius of the condensate. The spin rotation occurs as Bz is reduced, drawing the magnetic field zero into the region occupied by the superfluid.
You should be thanking Alan Guth and the Gods of Inflation they didn't find actual monopoles. Those things are terrifying beasts! They eat protons like it's going out of style!
http://www.npl.washington.edu/...
Those people who think they know everything are a great annoyance to those of us who do. (Isaac Asimov)
But how many slashdot stories about fusion reactors, methanol fuel cells, or flying cars has actually been more than investor fleecing vaporware?
These are not actually Dirac monopoles. These are magnetic quasiparticles that behave in a way that simulates Dirac monopoles.
The Ars Technicha article has the best explanation:
http://arstechnica.com/science...
Emphasis mine:
"Since we can't seem to find one, though, some researchers decided to emulate monopole behavior using an analogous quantum system. They used a Bose-Einstein condensate: a collection of very cold atoms that behaves like a single quantum system."
http://www.geoffreylandis.com
Did you hear that somebody has created a magnetic monopole?
Now the FTC is launching an anti-trust suit to break them up.
I really wish that lamers would stop posting articles to paywalled sites to try and generate traffic in the hope some sucker subscribes. post a link to the full article or get the hell of the internet and stop wasting people's time.
no, that equation still holds with no known exceptions.
summary is wrong, no monopoles were produced, just a formation that in some ways resembles one but is not a magnetic source or sink.
really, the sensationalist nonsense of half of slashdot's headings needs to stop
Can someone identify the music in the video?
how do they work?
Yeah, esp since what the researchers actually did was still pretty expletive cool.
Thanks to Larry Niven.
We will soon be searching for monopoles in the asteroids which will lead to our first encounter with the Pak.
Power tends to corrupt, and absolute power corrupts absolutely.
With a standard magnet, if you try to cut the poles apart, you end up with two smaller magnets, each with a pair of poles.
The Dirac monopole is like, instead of cutting the poles of a magnet apart, you deform the magnet and pull the poles apart until there is just a tiny infinitesimally small string connecting the two poles. You haven't actually created monopoles, but simulated them.
Still an impressive feat, but we haven't broken physics, despite what you might infer from the headlines.
terms like "synthetic" vs "real" make me cringe. Did they make synthetic tops at Fermilab and higgs at LHC? I'll reserve my excitement for some credible review of this claim and paper.
You need little to get impressed dont ya....
Ss it does zero for mankind what they did ...your impressed by...nothing means only your ability to reason must be unequivocally damaged in functional capacity of logic and reasoning.
Not on the Internet.
Where are we going and why are we in a handbasket?
electromagnetic, none the less..