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- Supercooling abstract "Supercooling, also known as undercooling, is the process of lowering the temperature of a liquid or a gas below its freezing point without it becoming a solid.A liquid below its standard freezing point will crystallize in the presence of a seed crystal or nucleus around which a crystal structure can form creating a solid. However, lacking any such nuclei, the liquid phase can be maintained all the way down to the temperature at which crystal homogeneous nucleation occurs. Homogeneous nucleation can occur above the glass transition temperature, but if homogeneous nucleation has not occurred above that temperature an amorphous (non-crystalline) solid will form.Water normally freezes at 273.15 K (0 °C or 32 °F) however it can also be "supercooled" at standard pressure down to its crystal homogeneous nucleation at almost 224.8 K (−48.3 °C/−55 °F). The process of supercooling requires that water be pure and free of nucleation sites, which can be achieved by processes like reverse osmosis, but the cooling itself does not require any specialised technique. If water is cooled at a rate on the order of 106 K/s, the crystal nucleation can be avoided and water becomes a glass. Its glass transition temperature is much colder and harder to determine, but studies estimate it at about 165 K (−108 °C/−162.4 °F).Glassy water can be heated up to approximately 150 K (−123 °C/−189.4 °F).In the range of temperatures between 231 K (−42 °C/−43.6 °F) and 150 K (−123 °C/−189.4 °F) experiments find only crystal ice.Droplets of supercooled water often exist in stratiform and cumulus clouds. Aircraft flying through these clouds seed an abrupt crystallization of these droplets, which can result in the formation of ice on the aircraft's wings or blockage of its instruments and probes, unless the aircraft are equipped with an appropriate de-icing system. Freezing rain is also caused by supercooled droplets.The process opposite to supercooling, the melting of a solid above the freezing point, is much more difficult, and a solid will almost always melt at the same temperature for a given pressure. For this reason, it is the melting point which is usually identified, using melting point apparatus; even when the subject of a paper is "freezing-point determination", the actual methodology is "the principle of observing the disappearance rather than the formation of ice". It is, however, possible, at a given pressure to superheat a liquid above its boiling point without it becoming gaseous.Supercooling is often confused with freezing-point depression. Supercooling is the cooling of a liquid below its freezing point without it becoming solid. Freezing point depression is when a solution can be cooled below the freezing point of the corresponding pure liquid due to the presence of the solute; an example of this is the freezing point depression that occurs when sodium chloride is added to pure water.".
- Supercooling thumbnail Constitutional_supercooling_-_phase_diagram,_concentration,_and_temperature.png?width=300.
- Supercooling wikiPageExternalLink ds03.pdf.
- Supercooling wikiPageExternalLink gass04.pdf.
- Supercooling wikiPageExternalLink watch?v=YuPfsAdEG2E.
- Supercooling wikiPageExternalLink watch?v=pTdiTe3x0Bo.
- Supercooling wikiPageExternalLink watch?v=q_gfIiVJ5Dc.
- Supercooling wikiPageExternalLink ABSTRACT.
- Supercooling wikiPageExternalLink theme3.py?level=1&index1=130463.
- Supercooling wikiPageID "285534".
- Supercooling wikiPageRevisionID "605308824".
- Supercooling hasPhotoCollection Supercooling.
- Supercooling subject Category:Concepts_in_physics.
- Supercooling subject Category:Condensed_matter_physics.
- Supercooling subject Category:Glass_physics.
- Supercooling subject Category:Thermodynamic_processes.
- Supercooling type Abstraction100002137.
- Supercooling type Act100030358.
- Supercooling type Activity100407535.
- Supercooling type Cognition100023271.
- Supercooling type Concept105835747.
- Supercooling type Content105809192.
- Supercooling type Event100029378.
- Supercooling type FundamentalPhysicsConcepts.
- Supercooling type Idea105833840.
- Supercooling type Procedure101023820.
- Supercooling type PsychologicalFeature100023100.
- Supercooling type ThermodynamicProcesses.
- Supercooling type YagoPermanentlyLocatedEntity.
- Supercooling comment "Supercooling, also known as undercooling, is the process of lowering the temperature of a liquid or a gas below its freezing point without it becoming a solid.A liquid below its standard freezing point will crystallize in the presence of a seed crystal or nucleus around which a crystal structure can form creating a solid. However, lacking any such nuclei, the liquid phase can be maintained all the way down to the temperature at which crystal homogeneous nucleation occurs.".
- Supercooling label "Przechłodzenie".
- Supercooling label "Sobrefusión".
- Supercooling label "Sobrefusão".
- Supercooling label "Sopraffusione".
- Supercooling label "Supercooling".
- Supercooling label "Superkoeling".
- Supercooling label "Surfusion".
- Supercooling label "Unterkühlung (Thermodynamik)".
- Supercooling label "Переохлаждённая жидкость".
- Supercooling label "过冷".
- Supercooling label "過冷却".
- Supercooling sameAs Podchlazení_(termodynamika).
- Supercooling sameAs Unterkühlung_(Thermodynamik).
- Supercooling sameAs Sobrefusión.
- Supercooling sameAs Surfusion.
- Supercooling sameAs Pendinginan_super.
- Supercooling sameAs Sopraffusione.
- Supercooling sameAs 過冷却.
- Supercooling sameAs 과냉각.
- Supercooling sameAs Superkoeling.
- Supercooling sameAs Przechłodzenie.
- Supercooling sameAs Sobrefusão.
- Supercooling sameAs m.01pz76.
- Supercooling sameAs Q213659.
- Supercooling sameAs Q213659.
- Supercooling sameAs Supercooling.
- Supercooling wasDerivedFrom Supercooling?oldid=605308824.
- Supercooling depiction Constitutional_supercooling_-_phase_diagram,_concentration,_and_temperature.png.
- Supercooling isPrimaryTopicOf Supercooling.
