What is absolute zero temperature ?
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Absolute zero is a fundamental lower bound on the temperature of any macroscopic system. It is approximately -273.15 degrees Celsius. It is unachievable in practice but it exists as a limit for real physical phenomena, and it was inferred by extrapolation from kinetic theory, and from other considerations in theoretical physics. One would like to define it as the temperature at which all motion ceases, but even at absolute zero some motion remains due to the requirements of quantum mechanics. Alternate definitions are that absolute zero is the temperature at which no further energy can be extracted from a physical body, or the temperature at which the entropies of perfect crystals vanish, or the temperature at which the entropy change of an adiabatic process vanishes.\n\nA state of absolute zero was first proposed by Guillaume Amontons in 1702 who was investigating the relationship between pressure and temperature in gases. He lacked accurate and precise thermometers so his results were only semi-quantitative, but he established that the pressure of a gas increases by roughly one-third between "cold" temperatures and the boiling point of water. His work led him to speculate that a sufficient reduction in temperature would lead to the disappearance of pressure. The problem is that all real gases liquefy during the approach to absolute zero.\n\nIn 1848, William Thomson, 1st Baron Kelvin proposed an absolute thermodynamic temperature scale in which equal reduction in measured temperature gave rise to equal reduction in the heat of a body. This freed the concept from the constraints of the gas laws and established absolute zero as the temperature at which no further heat could be removed from a body. Absolute zero has never been reached, and it appears it never will be. It may be asymptotically approached like the speed of light, but never attained.\n\nKinetic theory and motion\nAccording to kinetic theory, there should be no movement of individual molecules at absolute zero, so any material at this temperature would be solid. In a monatomic gas, most of the energy is in the form of translational motion, and the temperature can be measured in terms of the distribution of this motion, with slower speeds corresponding to lower temperatures, perhaps even down to absolute zero. But this is contrary to experimental evidence, and it is predicted that helium will never solidify, no matter how much it is cooled or compressed.\n\nBecause of quantum-mechanical effects, the speed at absolute zero is larger than zero and depends, along with the energy, on the volume within which a particle is confined. At absolute zero, the molecules and atoms in a system are all in their ground state, the state of lowest possible energy, and a system has the least amount of kinetic energy allowed by the laws of physics. But the lowest possible zero-point energy for a confined particle in a box is not zero. Rather than being fixed and non-moving, the equation for the energy levels shows that no matter how low the temperature gets, even when the quantum number takes its minimum value of one, a particle still has some translational kinetic energy and motion. This is a reflection of Heisenberg's uncertainty principle, which states that the position and the momentum of a particle cannot both be known precisely at any given time.\n\nSimilarly, using the harmonic approximation for the vibrations of a diatomic molecule, the quantum harmonic oscillator yields a positive zero-point energy even when the vibrational quantum number takes its minimum value of zero. For polyatomic molecules, and for bodies such as crystals, whose normal mode motions can not be assigned to individual atoms or chemical bonds, the lowest-energy state is that of the system as a whole.\n\nClassically, the absolute temperature T of a system of molecules at thermodynamic equilibrium assigns an average of 1/2 kT to each quadratic kinetic and/or potential energy term in each mechanica
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By definition, at absolute zero, nothing is moving.\n\nTemperature is the measure of the average kinetic energy of the particles of a system.  At absolute Zero (0 K), the partciles have stopped completely.  If all the particples have stopped, there is not way that it is going to move up/down/side to side since if it did, it would have some temperature ad thus not be at absolute zero.
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Zero degrees Kelvin (but not F or C) is as you suggest no temperature at all. Atoms don't move and there is no thermal energy.\n\nOf course, you can't get all the way to 0K in real life, that I know of. Liquid Helium is about 4K which is the lowest most people ever see.\n\n\n---- \n\nOK so a lot of differences in opinion here. First off, cold is not a temperature. Cold is lack of heat. The scientific definition of temperature (from American Heritage) is: \n\nA measure of the average kinetic energy of the particles in a sample of matter, expressed in terms of units or degrees designated on a standard scale.\n\nSo at the risk of sounding like a lawyer or politician, it depends on your definition of temperature and your definition of "no". But in scientific terms, 0K is no thermal activity.
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The coldest temperature that anything can reach is –273.15 °C. That is called "absolute zero". On the Kelvin scale, which uses the same divisions as the Celsius scale, it is zero, making the point at which water freezes 273.15 °K. Absolute zero is the point at which all atomic movement ceases, i.e. the atoms no longer move relative to one another.\n\nAny material can be heated or cooled to any temperature, as long as enough energy can be added or removed to do so. Materials left in an environment for long enough will reach the same temperature as their surroundings. This is known as reaching equilibrium with the environment.
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click here:http://en.wikipedia.org/wiki/Absolute_zero#History_of_absolute_zero
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The only scale that doesn't have a negative zone is Kelvin.\n\n0°K represents -273°C. And that's the coldest temperature ever achieved by man.\n\nThe 0°C represents the point where distilled water freezes.\n\nThe 100°C represents the point where distilled water boils.
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Disregard butchtroll, he doesn't know anything and is obviously just guessing.\n\nA absolute zero, although practically impossible to reach, it is theoretically very easy to calculate. Just assume that all particles have a velocity of zero, and calculate the lowest potential structure according to the lennard-jones potential and possible electro-static potential. The result concludes a structure quite similar to crystals at living-room temperature.\n\nButch - practically as in cannot be obtained through anything but theoretical experiments. Although, temperatures can actually be achieved that is sufficiently low to allow, in some degree, to regard matter as having a temperature of absolute zero. Theoretically, if such matter should exist, it would affect the universe in any significant way. That the universe cease to exist if absolute zero was reached, would be a prerequisite, not a result. You can do that math yourself and see if it is possible - or borrow the particle similator program I've written.\n\nmore: I find it funny that you preach about humility, after calling me an idiot. Especially after mixing different types of energy together and calling the lot for temperature. Sure, if an atom contain absolutely no energy, it would collapse into a black hole. But temperature is NOT a measure of total energy.\n\nyet more: Still you call me an idiot, and still you attempt to call humiliary high ground. I'm not saying I know everything myself - but wheter temperature is all energy, or just momentum of "particles", is pretty far from'everything'. As a student in nanotechnology, I can honestly say that, you sir, are blinded by your own feeble knowledge of physics. Temperature of matter is usually described as the summation of vibrational, momentum, rotational energy and phonons. NOT electronic excitation or any kind of potential energy.\n\nYour question was inane, and I *did* answer it. Nothing would happen with the universe if a cloud of hydrogen would suddenly come into existence with a temperature of zero kelvin. If you don't understand what I'm writing, just say so, instead of stating that I didn't answer your question.\n\nWhat do you attempt to prove with your citation? You seem lost, sir?\n\nWhat do you need a value of? What the temperature of the solid hydrogen would be after 1 second? Sorry, but I don't care enough to calculate how much a certain amount of hydrogen crystal would increase in temperature from background radiation.
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Well theoretically, above absolute zero. But practically, we can't reach absolute zero, so reactions can occur at any temperature humans can reach. We achieved to reach couple nano kelvins but we still have decades to reach absolute zero, if it is possible.
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The concept of absolute zero temperature is of greatest use in calculating the entropy of a system.Normally, not entropy but only the change in entropy can be calculated for a given system.But as per classical Kinetic Theory of Gases, molecular motion stops at absolute zero.Hence the entropy of a solid crystal structure is zero at absolute zero.So the difference in entropy for a system at a given temperature and that at absolute zero is the entropy of the system at given temperature itself.Hence it is difficult to obtain temperature very close to absolute zero(never absolute zero) but using modern technology it is possible and hence there can be just marginal error in the calculation of entropy of a system at a given temperature
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Temperature is the result of friction between atoms or molecules. A high temperature means great movement (at the atomic scale) and low temperature means very little movement. PS: no movement, meaning 0K, it`s not possible.
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Absolute zero refers to 0 degress Kelvin -- a measure of temperature.\n\nA Joule is the "metric" standard measure of energy.\n\nCalories are an older measure of thermal energy.\n\n1 Calorie = 4.18 Joules.
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Third Law Of Thermodynamics (I am studying that too)\n\nIt is impossible to reduce the temperature of any system to absolute zero by a finite number of operations.\n\nIf you are asking how much internal energy ice has at -273K, then the answer is zero.\n\nGood luck with this.
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IT'S 32 F SO THAT IS 0 C
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An ideal gas\n\nAn ideal gas or perfect gas is a hypothetical gas consisting of identical particles of zero volume, with no intermolecular forces. Additionally, the constituent atoms or molecules undergo perfectly elastic collisions with the walls of the container. Real gases do not exhibit these exact properties, although the approximation is often good enough to describe real gases. The approximation breaks down at high pressures and low temperatures, where the intermolecular forces play a greater role in determining the properties of the gas. There are basically three types of ideal gas:\n\n    * the classical or Maxwell-Boltzmann ideal gas,\n    * the ideal quantum Bose gas, composed of bosons, and\n    * the ideal quantum Fermi gas, composed of fermions.\n\nThe classical ideal gas can be separated into two types: The classical thermodynamic ideal gas and the ideal quantum Boltzmann gas. Both are essentially the same, except that the classical thermodyamic ideal gas is based on classical thermodynamics alone, and certain thermodynamic parameters such as the entropy are only specified to within an undetermined additive constant. The ideal quantum Boltzmann gas overcomes this limitation by taking the limit of the quantum Bose gas and quantum Fermi gas in the limit of high temperature to specify these additive constants. The behavior of a quantum Boltzmann gas is the same as that of a classical ideal gas except for the specification of these constants. The results of the quantum Boltzmann gas are used in a number of cases including the Sackur-Tetrode equation for the entropy of an ideal gas and the Saha ionization equation for a weakly ionized plasma.\n\nreal gas \n\nA gas is one of the four major phases of matter (after solid and liquid, and followed by plasma, that subsequently appear as a solid material is subjected to increasingly higher temperatures. Thus, as energy in the form of heat is added, a solid (e.g., ice) will first melt to become a liquid (e.g., water), which will then boil or evaporate to become a gas (e.g., water vapor). In some circumstances, a solid (e.g., "dry ice") can directly turn into a gas: this is called sublimation. If the gas is further heated, its atoms or molecules can become (wholly or partially) ionized, turning the gas into a plasma.
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Antarctica--in particular, the Russian station Vostok, at which a record-      setting low temperature of one hundred and twenty-eight point six below zero      Fahrenheit was recorded in nineteen eighty-three. \n\n In nineteen-o-eight the university of Leiden      made history by producing the first super-cooled helium. Guess how cold liquid      helium is? \nFour hundred fifty-two degrees below zero Fahrenheit.\nhttp://amos.indiana.edu/library/scripts/coldworld.html
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Anyone thinking that hasn't spent any time at my place.\n\nAbsolute Zero is how cold it is when hydrogen atoms stop moving.\n\nAnything colder than that is the area in and around my bed immediately after I ask my wife for sex.
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The word cryogenics literally means "the production of icy cold"; however the term is used today as a synonym for the low-temperature state. It is not well-defined at what point on the temperature scale refrigeration ends and cryogenics begins. The workers at the National Institute of Standards and Technology at Boulder, Colorado have chosen to consider the field of cryogenics as that involving temperatures below –150 °C (123 K). This is a logical dividing line, since the normal boiling points of the so-called permanent gases (such as helium, hydrogen, neon, nitrogen, oxygen, and normal air) lie below -150 °C while the Freon refrigerants, hydrogen sulfide, and other common refrigerants have boiling points above -150 °C.\n\nRecent research regarding superconductivity at low temperatures has been called cryoelectronics, and the utilization of these sciences is called cryotronics.