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Stratification


Stratification is the building up of layers, and can have several meanings
- Social stratification, is the dividing of a society into levels based on wealth or Power (sociology)|power.
- Stratification (archeology)|Stratification in archaeology is the formation of layers (strata) in which objects are found.
- Stratification of Rock (geology)|rock layers (stratum|strata) is part of the geologic field of Stratigraphy.
- Stratification (botany), where seeds are pretreated to simulate winter conditions so that germination may occur.
- See stratified sampling for the use of ''stratification'' in survey sampling. The term "stratified sampling" also refers a method of variance reduction in Monte Carlo methods.
- In logic, Stratification (mathematics)|stratification is a layering of predicate symbols to guarantee unique interpretations and to avoid paradoxical definitions like Russell's paradox.
- In mathematics, Stratification (mathematics)|Stratification has a separate meaning as applied to manifolds, and singularity theory, of a decomposition into pieces with specified relationships on fitting together.
- In music stratification (music)|stratification is a layering of musical texture or the independent operating of more than one parameter simultaneity|simultaneously (see auditory stream).
- In meteorology, atmospheric stratification is the division of the Earth's atmosphere|atmosphere into distinct layers, each with specific properties such as temperature or humidity.
- In histology, ''stratified'' epithelium refers to epithelium that consists of two or more layers of epithelial cells, in contrast to ''simple'' epithelium, which only has one layer.
- genetic association|Genetic stratification
- Stratification (water) can occur due to gradients in salinity or temperature, e.g. lake stratification.
- Stratification of air — unmixed air within a confined space that is separated into thermal layers due to temperature variations.
- A way an internal combustion operates, when Gasoline direct injection|direct injection is used to burn fuel just at the sparkplug and keep in the rest of the cylinder plain air. This reduces fuel consumption significantly.

See also


- Destratification
- Partition

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