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- Length_scale abstract "In physics, length scale is a particular length or distance determined with the precision of one order (or a few orders) of magnitude. The concept of length scale is particularly important because physical phenomena of different length scales cannot affect each other and are said to decouple. The decoupling of different length scales makes it possible to have a self-consistent theory that only describes the relevant length scales for a given problem. Scientific reductionism says that the physical laws on the shortest length scales can be used to derive the effective description at larger length scales. The idea that one can derive descriptions of physics at different length scales from one another can be quantified with the renormalization group.In quantum mechanics the length scale of a given phenomenon is related to its de Broglie wavelengthwhere is the reduced Planck's constant and is the momentum that is being probed. In relativistic mechanics time and length scales are related by the speed of light. In relativistic quantum mechanics or relativistic quantum field theory, length scales are related to momentum, time and energy scales through Planck's constant and the speed of light. Often in high energy physics natural units are used where length, time, energy and momentum scales are described in the same units (usually with units of energy such as GeV).Length scales are usually the operative scale (or at least one of the scales) in dimensional analysis. For instance, in scattering theory, the most common quantity to calculate is a cross section which has units of length squared and is measured in barns. The cross section of a given process is usually the square of the length scale.".
- Length_scale wikiPageID "697181".
- Length_scale wikiPageRevisionID "601482832".
- Length_scale hasPhotoCollection Length_scale.
- Length_scale subject Category:Concepts_in_physics.
- Length_scale subject Category:Particle_physics.
- Length_scale subject Category:Renormalization_group.
- Length_scale type Abstraction100002137.
- Length_scale type Cognition100023271.
- Length_scale type Concept105835747.
- Length_scale type Content105809192.
- Length_scale type FundamentalPhysicsConcepts.
- Length_scale type Idea105833840.
- Length_scale type PsychologicalFeature100023100.
- Length_scale comment "In physics, length scale is a particular length or distance determined with the precision of one order (or a few orders) of magnitude. The concept of length scale is particularly important because physical phenomena of different length scales cannot affect each other and are said to decouple. The decoupling of different length scales makes it possible to have a self-consistent theory that only describes the relevant length scales for a given problem.".
- Length_scale label "Escala de comprimento".
- Length_scale label "Escalas de longitud".
- Length_scale label "Length scale".
- Length_scale label "Scala di lunghezza".
- Length_scale sameAs Escalas_de_longitud.
- Length_scale sameAs Scala_di_lunghezza.
- Length_scale sameAs Escala_de_comprimento.
- Length_scale sameAs m.033mcr.
- Length_scale sameAs Q2477027.
- Length_scale sameAs Q2477027.
- Length_scale sameAs Length_scale.
- Length_scale wasDerivedFrom Length_scale?oldid=601482832.
- Length_scale isPrimaryTopicOf Length_scale.