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. In Sociology, social stratification is the hierarchical arrangement of Social classes Castes and strata within a Society. A society is a Population of Humans characterized by patterns of relationships between individuals that share a distinctive Culture and Institutions Wealth derives from the old English word "weal" which means "well-being Power is a measure of a person's ability to control the environment around them including the behavior of other people
• Stratification in archaeology is the formation of layers (strata) in which objects are found. In Archaeology, especially in the course of Excavation, stratification is a paramount and base concept Archaeology, archeology, or archæology (from Greek grc ἀρχαιολογία archaiologia – grc ἀρχαῖος archaīos
• Stratification of rock layers (strata) is part of the geologic field of Stratigraphy. In Geology, rock is a naturally occurring aggregate of Minerals and/or Mineraloids The Earth's outer solid layer the ‘ Lithosphere In Geology and related fields a stratum (plural strata) is a layer of rock or Soil with internally consistent characteristics that distinguishes Geology (from Greek γη gê, "earth" and λόγος Logos, "speech" lit Stratigraphy, a branch of Geology, studies rock layers and layering ( stratification)
• Stratification (botany), where seeds are pretreated to simulate winter conditions so that germination may occur. In Horticulture, stratification is the process of pretreating Seeds to simulate natural conditions that a seed must endure before Germination. Germination is the process whereby growth emerges from a period of dormancy
• See stratified sampling for the use of stratification in survey sampling. In Statistics, stratified sampling is a method of sampling from a population In Statistics, survey sampling is random selection of a sample from a finite population The term "stratified sampling" also refers a method of variance reduction in Monte Carlo methods. Monte Carlo methods are a class of Computational Algorithms that rely on repeated Random sampling to compute their results
• In logic, stratification is a layering of predicate symbols to guarantee unique interpretations and to avoid paradoxical definitions like Russell's paradox. Logic is the study of the principles of valid demonstration and Inference. Stratification has several usages in mathematics In mathematical logic In Mathematical logic, stratification is any consistent assignment of numbers Part of the Foundations of mathematics, Russell's paradox (also known as Russell's antinomy) discovered by Bertrand Russell in 1901 showed that the
• In mathematics, Stratification has a separate meaning as applied to manifolds, and singularity theory, of a decomposition into pieces with specified relationships on fitting together. Mathematics is the body of Knowledge and Academic discipline that studies such concepts as Quantity, Structure, Space and Stratification has several usages in mathematics In mathematical logic In Mathematical logic, stratification is any consistent assignment of numbers A manifold is a mathematical space in which every point has a neighborhood which resembles Euclidean space, but in which the global structure may be For other mathematical uses see Mathematical singularity. For non-mathematical uses see Gravitational singularity.
• In music stratification is a layering of musical texture or the independent operating of more than one parameter simultaneously (see auditory stream). Music is an Art form in which the medium is Sound organized in Time. In Music, texture is the overall quality of sound of a piece, most often indicated by the number of voices in the music and by the relationship between In Mathematics, Statistics, and the mathematical Sciences a parameter ( G auxiliary measure) is a quantity that defines certain characteristics In Music, voice leading is the relationship between the successive pitches of simultaneous moving parts or voices.
• In meteorology, atmospheric stratification is the division of the atmosphere into distinct layers, each with specific properties such as temperature or humidity. Meteorology (from Greek grc μετέωρος metéōros, "high in the sky" and grc -λογία -logia) is the Interdisciplinary Atmospheric stratification is the division of the atmosphere into distinct layers each with specific properties such as temperature or humidity Temperature and layers The temperature of the Earth's atmosphere varies with altitude the mathematical relationship between temperature and altitude varies among five
• 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. Histology (from the Greek = 'tissue' is the study of the microscopic anatomy of cells and tissues of Plants and In biology and medicine epithelium is a tissue composed of cells that line the cavities and surfaces of structures throughout the body
• Genetic stratification
• Stratification (water) can occur due to gradients in salinity or temperature, e. Studies concerning genetic association aim to test whether single-locus alleles or genotype frequencies (or more generally multilocus Haplotype frequencies are different between Water stratification occurs when water of high and low salinity ( Halocline) as well as cold and warm water ( Thermocline) forms layers that act as barriers to water g. lake stratification. Lake stratification is the separation of Lakes into three layers Epilimnion - top of the lake
• 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 direct injection is used to burn fuel just at the sparkplug and keep in the rest of the cylinder plain air. Gasoline direct injection is a latest variant of Fuel injection employed in modern two- and four- stroke Petrol engines The petrol/gasoline This reduces fuel consumption significantly.

See also

• Destratification
• Partition

Destratification is a process in which the air or water is mixed in order to eliminate stratified layers of temperature plant or animal life

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