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Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Negative_temperature> ?p ?o }

• Negative_temperature abstract "In physics, certain systems can achieve negative temperature; that is, their thermodynamic temperature can be expressed as a negative quantity on the Kelvin or Rankine scales.In colloquial usage, \"negative temperature\" may refer to temperatures that are expressed as negative numbers on the more familiar Celsius or Fahrenheit scales, with values that are colder than the zero points of those scales but still warmer than absolute zero; this usage is not treated in this article.A system with a truly negative temperature on the Kelvin scale is hotter than any system with a positive temperature. If a negative-temperature system and a positive-temperature system come in contact, heat will flow from the negative- to the positive-temperature system.That a system at negative temperature is hotter than any system at positive temperature is paradoxical if absolute temperature is interpreted as an average kinetic energy of the system. The paradox is resolved by understanding temperature through its more rigorous definition as the tradeoff between energy and entropy, with the reciprocal of the temperature, thermodynamic beta, as the more fundamental quantity. Systems with a positive temperature will increase in entropy as one adds energy to the system. Systems with a negative temperature will decrease in entropy as one adds energy to the system.Most familiar systems cannot achieve negative temperatures, because adding energy always increases their entropy. The possibility of decreasing in entropy with increasing energy requires the system to \"saturate\" in entropy, with the number of high energy states being small. These kinds of systems, bounded by a maximum amount of energy, are generally forbidden classically. Thus, negative temperature is a strictly quantum phenomenon. Some systems, however (see the examples below), have a maximum amount of energy that they can hold, and as they approach that maximum energy their entropy actually begins to decrease.".
• Negative_temperature thumbnail ColdnessScale.png?width=300.
• Negative_temperature wikiPageExternalLink si.
• Negative_temperature wikiPageID "362728".
• Negative_temperature wikiPageLength "21754".
• Negative_temperature wikiPageOutDegree "64".
• Negative_temperature wikiPageRevisionID "679400697".
• Negative_temperature wikiPageWikiLink Absolute_hot.
• Negative_temperature wikiPageWikiLink Absolute_zero.
• Negative_temperature wikiPageWikiLink Atom.
• Negative_temperature wikiPageWikiLink Atomic_nucleus.
• Negative_temperature wikiPageWikiLink Binomial_coefficient.
• Negative_temperature wikiPageWikiLink Bloomsbury_Publishing.
• Negative_temperature wikiPageWikiLink Boltzmann_constant.
• Negative_temperature wikiPageWikiLink Bose–Hubbard_model.
• Negative_temperature wikiPageWikiLink Brady_Haran.
• Negative_temperature wikiPageWikiLink Category:Laser_science.
• Negative_temperature wikiPageWikiLink Category:Magnetism.
• Negative_temperature wikiPageWikiLink Category:Plasma_physics.
• Negative_temperature wikiPageWikiLink Category:Temperature.
• Negative_temperature wikiPageWikiLink Celsius.
• Negative_temperature wikiPageWikiLink Degrees_of_freedom_(physics_and_chemistry).
• Negative_temperature wikiPageWikiLink Electron.
• Negative_temperature wikiPageWikiLink Electron_configuration.
• Negative_temperature wikiPageWikiLink Energy.
• Negative_temperature wikiPageWikiLink Entropy.
• Negative_temperature wikiPageWikiLink Fahrenheit.
• Negative_temperature wikiPageWikiLink Feshbach_resonance.
• Negative_temperature wikiPageWikiLink Finite_difference.
• Negative_temperature wikiPageWikiLink Grand_canonical_ensemble.
• Negative_temperature wikiPageWikiLink Hamiltonian_(quantum_mechanics).
• Negative_temperature wikiPageWikiLink Infinity.
• Negative_temperature wikiPageWikiLink Ising_model.
• Negative_temperature wikiPageWikiLink Kelvin.
• Negative_temperature wikiPageWikiLink Laser.
• Negative_temperature wikiPageWikiLink Magnetic_field.
• Negative_temperature wikiPageWikiLink Microcanonical_ensemble.
• Negative_temperature wikiPageWikiLink Microstate_(statistical_mechanics).
• Negative_temperature wikiPageWikiLink Mott_insulator.
• Negative_temperature wikiPageWikiLink Negative_number.
• Negative_temperature wikiPageWikiLink Negative_resistance.
• Negative_temperature wikiPageWikiLink Optical_lattice.
• Negative_temperature wikiPageWikiLink Oscillation.
• Negative_temperature wikiPageWikiLink Physics.
• Negative_temperature wikiPageWikiLink Population_inversion.
• Negative_temperature wikiPageWikiLink Quantum_mechanics.
• Negative_temperature wikiPageWikiLink Radio_frequency.
• Negative_temperature wikiPageWikiLink Rankine_scale.
• Negative_temperature wikiPageWikiLink Rotation.
• Negative_temperature wikiPageWikiLink Semiconductor.
• Negative_temperature wikiPageWikiLink Speed.
• Negative_temperature wikiPageWikiLink Spin_(physics).
• Negative_temperature wikiPageWikiLink Statistical_mechanics.
• Negative_temperature wikiPageWikiLink Temperature.
• Negative_temperature wikiPageWikiLink Thermodynamic_beta.
• Negative_temperature wikiPageWikiLink Thermodynamic_system.
• Negative_temperature wikiPageWikiLink Thermodynamic_temperature.
• Negative_temperature wikiPageWikiLink Thermodynamics.
• Negative_temperature wikiPageWikiLink Translation_(geometry).
• Negative_temperature wikiPageWikiLink University_of_Nottingham.
• Negative_temperature wikiPageWikiLink W._H._Freeman_and_Company.
• Negative_temperature wikiPageWikiLink File:ColdnessScale.png.
• Negative_temperature wikiPageWikiLinkText "Negative temperature".
• Negative_temperature wikiPageWikiLinkText "negative temperature".
• Negative_temperature align "right".
• Negative_temperature direction "vertical".
• Negative_temperature footer "Entropy, thermodynamic beta, and temperature as a function of the energy for a system of N noninteracting two–level particles.".
• Negative_temperature image "Negative temperature S of E.png".
• Negative_temperature image "Negative temperature T of E.png".
• Negative_temperature image "Negative temperature beta of E.png".
• Negative_temperature width "235".
• Negative_temperature wikiPageUsesTemplate Template:Cite_book.
• Negative_temperature wikiPageUsesTemplate Template:Cite_conference.
• Negative_temperature wikiPageUsesTemplate Template:Cite_journal.
• Negative_temperature wikiPageUsesTemplate Template:Cite_web.
• Negative_temperature wikiPageUsesTemplate Template:Expert-subject.
• Negative_temperature wikiPageUsesTemplate Template:Multiple_image.
• Negative_temperature wikiPageUsesTemplate Template:Reflist.
• Negative_temperature wikiPageUsesTemplate Template:SimpleNuclide.
• Negative_temperature subject Category:Laser_science.
• Negative_temperature subject Category:Magnetism.
• Negative_temperature subject Category:Plasma_physics.
• Negative_temperature subject Category:Temperature.
• Negative_temperature hypernym Hotter.
• Negative_temperature type Star.
• Negative_temperature type Astrophysic.
• Negative_temperature type Laser.
• Negative_temperature type Physic.
• Negative_temperature type Property.
• Negative_temperature type Quantity.
• Negative_temperature type Thermodynamic.
• Negative_temperature comment "In physics, certain systems can achieve negative temperature; that is, their thermodynamic temperature can be expressed as a negative quantity on the Kelvin or Rankine scales.In colloquial usage, \"negative temperature\" may refer to temperatures that are expressed as negative numbers on the more familiar Celsius or Fahrenheit scales, with values that are colder than the zero points of those scales but still warmer than absolute zero; this usage is not treated in this article.A system with a truly negative temperature on the Kelvin scale is hotter than any system with a positive temperature. ".
• Negative_temperature label "Negative temperature".
• Negative_temperature sameAs Q2381834.
• Negative_temperature sameAs حرارة_سالبة.
• Negative_temperature sameAs Temperatura_negativa.
• Negative_temperature sameAs Αρνητική_θερμοκρασία.
• Negative_temperature sameAs Temperatura_negativa.
• Negative_temperature sameAs دمای_منفی.
• Negative_temperature sameAs Température_négative.

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