It can be shown from the laws of thermodynamics that absolute zero can never be achieved artificially, though it is possible to reach temperatures arbitrarily close to it through the use of cryocoolers. This is the same principle that ensures no machine can be 100% efficient.
At very low temperatures in the vicinity of absolute zero, matter exhibits many unusual properties including superconductivity, superfluidity, and Bose-Einstein condensation. In order to study such phenomena, scientists have worked to obtain ever lower temperatures.
In September 2003, MIT announced a record cold temperature of 450 pK, or 4.5 × 10-10 K in a Bose-Einstein condensate of sodium atoms. This was performed by Wolfgang Ketterle and colleagues at MIT.[3]
As of February 2003, the Boomerang Nebula, with a temperature of -272.15 Celsius; 1K, is the coldest place known outside a laboratory. The nebula is 5000 light-years from Earth and is in the constellation Centaurus.[4]
As of November 2000, nuclear spin temperatures below 100 pK were reported for an experiment at the Helsinki University of Technology's Low Temperature Lab. However, this was the temperature of one particular type of motion— a quantum property called nuclear spin — not the overall average thermodynamic temperature for all possible degrees of freedom.
2007-03-09 00:04:45
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answer #1
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answered by Shrey G 3
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Absolute zero is a theoretical minimum temperature. Temperatures in outer space is even above absolute zero, approximately 2.7K.
However scientists have achieved temperatures just above absolute zero at approximately 10 micro-Kelvin using Nuclear Magnetism. Another techniques to lower temperature to near 0K is to use a dilation refrigerator. This will get you to about a few milli-Kelvin. Both of these are very close to absolute zero.
2007-03-09 08:22:44
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answer #2
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answered by c1b3rnut 1
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There is no place where there is absolute temperature. The temperature of our universe may become absolute zero in future, right now according to scientists, temperature of our universe is about -270 degree celsius so it also proves the theory of BIG BANG. The coldest place in our solar system is one of the moons of saturn which is having freezed methane gas at -156 degree celsius.
2007-03-09 08:31:34
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answer #3
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answered by Piyush 1
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Absolute zero Temperature or pressure cannot quite be attained.
Outer space is considered to be the nearest to absolute zero temperature and pressure.
2007-03-09 11:13:46
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answer #4
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answered by Norrie 7
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Absolute zero could be in absolute vacuum, which itself is impossible! If you put something in that absolute vacuum to experience absolute zero, it is no longer absolute vacuum. Even a limited absolute vacuum will have a boundary consisting of matter which will again make absolute vacuum impossible!
2007-03-09 08:15:04
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answer #5
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answered by Let'slearntothink 7
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absolute zero does not occur naturally and it has never been produced by scientists
2007-03-09 08:03:50
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answer #6
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answered by Dan 1
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because the temprature of the gas in a room is maxwellian distrubted then statistically you will get an atom with no velocity ie absolute zero temp then the atom will start to fall to the earth and then have a velocity and temp. in space there is a minimum temprature of 3k
2007-03-11 17:44:24
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answer #7
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answered by Richard 1
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It can't because you would need a lower temperature to achieve absolute zero and that doesn't exist.
2007-03-09 08:04:49
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answer #8
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answered by Anonymous
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There is no such thing as true absolute zero, all systems have some level of energy- therefore heat present.
2007-03-11 12:33:05
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answer #9
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answered by Anonymous
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When a girl brings home a boy from the wrong part of town
2007-03-09 15:00:00
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answer #10
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answered by Anonymous
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