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Quantum Levitation
Created 18th October 2011 @ 17:38
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Quoted from wpminnows
now we can finally have hoverboards
4 years, Back to the Future won’t let me down.
Quoted from Ash
It’s a phenomena known as the Meissner Effect, happens when most conductors are supercooled to a few tens of kelvin (-260 degrees approximately).
As for the graphene response, graphene is not a conductor, its a semi conductor. It has some pretty amazing properties, like being totally 1-dimensional and every conduction electron travelling at exactly 1000 km per second, yet super conductivity in it is highly unlikely to occur.
Would be cool to have materials which super- and semiconduct at the same time though… Insanely fast computers that generate minimal amounts of heat :P
Quoted from Gladdy
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Would be cool to have materials which super- and semiconduct at the same time though… Insanely fast computers that generate minimal amounts of heat :P
http://www.engadget.com/2011/04/08/ibm-shows-off-155ghz-graphene-transistor-in-the-name-of-darpa-re/
Quoted from Gladdy
[…]
Would be cool to have materials which super- and semiconduct at the same time though… Insanely fast computers that generate minimal amounts of heat :P
In terms of the physics, thats impossible pretty much. As far as i am aware it is impossible for a material to have both super and semi conducting properties. If you want insanely fast computing, look at quantum computing, everything happens instantly with that :)
Quoted from Ash
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In terms of the physics, thats impossible pretty much. As far as i am aware it is impossible for a material to have both super and semi conducting properties. If you want insanely fast computing, look at quantum computing, everything happens instantly with that :)
Travelling faster than the speed of light was supposed to be ‘impossible’ aswell :P
Quoted from Gladdy
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Travelling faster than the speed of light was supposed to be ‘impossible’ aswell :P
It was shown that that result was likely false, but that didn’t recieve much mainstream media coverage ;)
Last edited by octochris,
Quoted from octochris
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It was shown that that result was likely false, but that didn’t recieve much coverage ;)
Didn’t they make like thousands of experiments just to be sure?
Quoted from octochris
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It was shown that that result was likely false, but that didn’t recieve much mainstream media coverage ;)
It would be pretty stupid if they overlooked something as simple as that. Accounting for special relativity in gps has been known for years.
http://en.wikipedia.org/wiki/Error_analysis_for_the_Global_Positioning_System#Relativity
I don’t understand, I remember watching near enough the exact same demonstration on a Horizon program in like 1999.
Also http://www.radiotimes.com/episode/nhgkh/faster-than-the-speed-of-light 9pm BBC2 tonight
Last edited by FADe,
I like how the guy kept using different words to describe the action, and every time the physicist was like “No, Locking, LOCKING”
The reason that sort of thing doesn’t see widespread use is that for the “levitation” effect to occur, the item being levitated must be a superconductor. Currently, the only way we know how to make something a superconductor is to make it really, really cold, which isn’t easy or safe to implement in widespread usage.
Thus we need to find a room temperature superconductor, badly.
Interestingly, there is no physical theory forbidding one.
There is, in fact, no really consistent theory explaining high-temperature superconductivity AT ALL.
When superconductors were discovered (elemental superconductors), a nice theory was quickly developed which explained them nicely. Except it predicted that no superconductivity about 4 Kelvin was ever possible.
Nowadays, superconductors work in 1XX Kelvin temperatures, and we have no clue as to why.
Whoever figures it out will have a nice dinner with the king of sweden soon.
I found another video relating to this experiment with some explanation. http://www.youtube.com/watch?v=VyOtIsnG71U&feature=related
Last edited by dodgydogman,
Quoted from dodgydogman
Lovely video. Loved the ending where they mentioned professor Nimrod Batcher!
holy crap when i saw this yesterday afternoon it had about 80k views
wanna lick that disc
Quoted from instag1b
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It would be pretty stupid if they overlooked something as simple as that. Accounting for special relativity in gps has been known for years.
http://en.wikipedia.org/wiki/Error_analysis_for_the_Global_Positioning_System#Relativity
Its not special relativity that they account for in gps, its general relativity. As for the whole neutrinos travelling faster than the speed of light, it doesnt mean anything yet until another institution can replicate the results. Hence as soon as the team at the OPERA detector found something anomalous they urged the entire scientific community to check their results and perform the same experiment. In the modern scientific community nothing is accepted until it is replicated.
As for the super conductors, recent inovations have allowed super conducting to occur in mercury thallium barium calcium copper oxide (retarded name yes :P) at about 140 kelvin which is still only -160 degrees.
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