Scientists Reach A Temperature Lower Than Absolute Zero | |
Here for the moment User ID: 14554879 United States 01/05/2013 07:22 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 27168996 United States 01/05/2013 10:12 PM Report Abusive Post Report Copyright Violation | time would not stop at absolute zero, because while atomic motion stops, other processes remain such as the spin of subatomic particles, or the "movement" of electrons due to the fact that, while they don't actually orbit an atom, they have certain probabilities of appearing at given points, due to quantum mechanics. even a mile away from an atom, an electron has a certain infinitesimally small probability of appearing for a very brief period. or on the other side of a lead wall. due to those mechanics, no barrier is truly impenetrable. thus, the electrons are going to "move" no matter what. the implications of that are very, very interesting. 1) say one molecule, at absolute zero, a crystalline state of zero-point energy, is all the universe consists of. all motion stops except the spin of subatomic particles, and quantum fluctuations ("movement") of electrons. yet nothing affects them and they affect nothing- practically speaking, it's an absolutely perfect top that spins forever and ever and ever. so, in that universe, time exists- yet has zero effect whatsoever. what good is it? doesn't that mean time ceases to exist? yet it does exist. 2) doesn't the fact that many such molecules interact together in a relative time frame, mean that the entire universe should by definition be considered one big molecule? because of time? |
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Anonymous Coward User ID: 31593798 United States 01/05/2013 11:08 PM Report Abusive Post Report Copyright Violation | time is a function of an increase of entropy. entropy can be mechanically reversed (decreased), but no mechanism can make entropy reverse spontaneously. therefore time will not go backwards. if you could make a machine that creates a field in the boundaries of which entropy spontaneously decreased, it would still not be a "time machine" because the paths by which the contents had entropied would not necessarily (and won't) follow the paths by which they had progressed. entropy is random forwards and backwards. therefore a time machine is impossible. the objects in the field would appear to follow "forward time" though it would be interesting to watch what they do. ice spontaneously freezes instead of thaws, gravity repulses instead of attracts, a flame could turn itself into a lump of flammable material, light condenses into glowing objects which turn into dark lumps and electricity. but it would not be a time machine. |
yeswecan User ID: 19815370 United States 01/05/2013 11:43 PM Report Abusive Post Report Copyright Violation | time is a function of an increase of entropy. entropy can be mechanically reversed (decreased), but no mechanism can make entropy reverse spontaneously. therefore time will not go backwards. Quoting: Anonymous Coward 31593798 if you could make a machine that creates a field in the boundaries of which entropy spontaneously decreased, it would still not be a "time machine" because the paths by which the contents had entropied would not necessarily (and won't) follow the paths by which they had progressed. entropy is random forwards and backwards. therefore a time machine is impossible. the objects in the field would appear to follow "forward time" though it would be interesting to watch what they do. ice spontaneously freezes instead of thaws, gravity repulses instead of attracts, a flame could turn itself into a lump of flammable material, light condenses into glowing objects which turn into dark lumps and electricity. but it would not be a time machine. So therefore, there is nothing below absolute zero? resist we much! |
Anonymous Coward User ID: 31641957 United States 01/06/2013 05:38 PM Report Abusive Post Report Copyright Violation | that's what I would say. also, entropy is a thermodynamic process. when you examine the subject of "entropy" and its effects, such as temperatures near absolute zero, degrees of entropy, energy states, etc. you see that entropy IS thermodynamics. the rest of thermodynamics we think of, such as what makes refrigerators work, ice thaw, heat of combustion, etc. is entropy on a gross scale. it's all entropy. but "time" is a function of entropy. time is driven by entropy. entropy makes time happen. without entropy changing, there is no time progressing. we can conclude that when the total entropy of a system is zero, there is no time. but when "total entropy"=zero, "temperature"="absolute zero", and there is no time. therefore it is a barrier. it is impossible to go lower than absolute zero because time has stopped- the same mechanism that limits the speed of light. what are the implications? what more can be deduced? bang those rocks together! |
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JBG User ID: 15203916 United Kingdom 01/06/2013 05:56 PM Report Abusive Post Report Copyright Violation | As I am reading this it is all just sensationalist reporting - what they have done is to take an unstable system of atoms with respect to their internal magnetic spin states, cool it to absolute zero - then energy pumped into it goes into normalising instead of increasing kinetic energy - and hence they maintain it must previously have had a negative temperature - which is just semantics! |
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Anonymous Coward User ID: 31574294 United States 01/06/2013 06:11 PM Report Abusive Post Report Copyright Violation | Good explanation of the discovery is here on the Max Planck Institute's website: [link to www.mpq.mpg.de] |
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Anonymous Coward User ID: 31626588 United Kingdom 01/06/2013 06:15 PM Report Abusive Post Report Copyright Violation | How is this possible? Quoting: Anonymous Coward 14093935 All matter and particles stop moving at absolute zero. No friction or energy is transmitted. There is no heat whatsoever. How can you have anti-heat? Exactly what I was wondering... At absolute zero everything "stops" in the molecular level... How you go beyond "everything stopped"??? I don't think it does. I believe there is still some degree of quantum "jitter". |
Anonymous Coward User ID: 31574294 United States 01/06/2013 06:22 PM Report Abusive Post Report Copyright Violation | Good explanation of the discovery is here on the Max Planck Institute's website: Quoting: Anonymous Coward 31574294 [link to www.mpq.mpg.de] From the article: "Matter at negative absolute temperature leads to a whole bunch of astounding consequences: With its help, one could create heat engines with an efficiency above 100%. This does not mean that the law of energy conservation is violated. Instead, the machine could not only absorb energy from the hotter substance, but, in contrast to the usual case, also from the colder. The work performed by the engine could therefore be larger than the energy taken from the hotter substance alone." Bye, Bye Second Law of Thermodynamics! |
Children of the Atom User ID: 20257839 United States 01/06/2013 06:24 PM Report Abusive Post Report Copyright Violation | Holy fuck sticks this is BIG news! Quoting: Anonymous Coward 31555492 Bigger than that shitty higgs boson god particle! "This unusual advance could lead to new engines that could technically be more than 100 percent efficient," Read more: [link to www.foxnews.com] More than 100% efficient? If i fill up 100% of a glass with milk, what happens beyond 100%? You guys are dumb asses sometimes on here and the God Particle is amazing. Last Edited by Children of the Atom on 01/06/2013 06:25 PM |
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CripplingLies User ID: 5010858 Brazil 01/07/2013 06:23 AM Report Abusive Post Report Copyright Violation | How is this possible? Quoting: Anonymous Coward 14093935 All matter and particles stop moving at absolute zero. No friction or energy is transmitted. There is no heat whatsoever. How can you have anti-heat? No respectable man of science should be skeptical. Science is correcting itself over and over again through the years. Acting like this, is the same way people use to act in the dark and mediaval ages. Remember, science is not absolute. There will always be something else to be discovered, even in those things we have as an absolute truth, this one is a good example. Do not relay your lives in science. |
Halcyon Dayz, FCD User ID: 31033756 Netherlands 01/07/2013 06:33 AM Report Abusive Post Report Copyright Violation | Once again quantum physics makes no sense to me what so ever. At the quantum scale the universe is a really bizarre place. Scepticism is the heart of science. Reaching for the sky makes you taller. Hi! My name is Halcyon Dayz and I'm addicted to morans. |
Anonymous Coward User ID: 18267374 United States 01/07/2013 06:36 AM Report Abusive Post Report Copyright Violation | All you guys are bugging over time and gravity. NEITHER ARE REAL. Time is nothing more than perception. We as conscious human beings created the concept to grasp the idea of movement through space. The rate of movement is normally described as acceleration. All particles in front of us are in a state of acceleration in some direction. Nothing is at an absolute standstill in the universe. All time is good for is determining where to be in relation to another event at a certain time. Time cannot stop, you cannot travel to another point in it, and time never began or ended, and all of this is because it does not exist. We are in a state of ever changing present. This second never ended, things just moved since I last perceived them. Consciousness plays a part in perceived time, as old sayings go "Time flies when you're having fun." As for gravity, I've postulated for a very very long time, as have a lot of others, that it is merely a side effect of electromagnetism around localized "heavy objects". As the force cannot be measured directly or detected, as a force it does not exist. All this discovery really proves to those that really understand the implications is that Space Time Curvature has nothing to do with gravity, and it has more to do with energetic states. And since that is the PROVEN case here, this means that the whole concept of space time curvature is now irrelevant, as the only reason it existed was to give a reason for the action of gravity. It can be said that this disproves curvature of the universal medium, thus throwing out Relativity in general. This also validates this theory, making it potentially the new "Top Dog" in the Physics community: [link to en.wikipedia.org] That theory is sort of a re-imagining of the Classical Aether Theories that Tesla, Edison, Newton, Faraday, Kelvin, and Lorentz all based the entirety of their works on. It took 100 years, but science got back on track. Our greatest deceased thinkers are overjoyed at this point in their graves. TL;DR Einstein was wrong, Tesla was right. Free-energy proponents are vindicated, and there are no absolutes. It's 2013, where the fuck is my flying car? |
oLOVEz User ID: 30816439 United States 01/07/2013 09:09 AM Report Abusive Post Report Copyright Violation | Holy fuck sticks this is BIG news! Quoting: Anonymous Coward 31555492 Bigger than that shitty higgs boson god particle! "This unusual advance could lead to new engines that could technically be more than 100 percent efficient," Read more: [link to www.foxnews.com] More than 100% efficient? If i fill up 100% of a glass with milk, what happens beyond 100%? You guys are dumb asses sometimes on here and the God Particle is amazing. Wouldn't anything over 100% be stored in a reserve like a battery. Like how if you have a solar farm, any 'extra' energy left over from your uses can be sold to the power company. |
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Anonymous Coward User ID: 31693114 United States 01/07/2013 12:30 PM Report Abusive Post Report Copyright Violation | Holy fuck sticks this is BIG news! Quoting: Anonymous Coward 31555492 Bigger than that shitty higgs boson god particle! "This unusual advance could lead to new engines that could technically be more than 100 percent efficient," Read more: [link to www.foxnews.com] |
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