Cross section may refer to:
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Cross section (geometry)
In geometry and science, a cross section is the non-empty intersection (set theory), intersection of a solid body in three-dimensional space with a Plane (geometry), plane, or the analog in higher-dimensional spaces. Cutting an object into slic ...
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Cross-sectional views in architecture and engineering 3D
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Cross section (geology)
In geology, a cross section or cross-section is a diagram representing the geologic features intersecting a vertical plane, and is used to illustrate an area's structure and stratigraphy that would otherwise be hidden underground. The features de ...
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Cross section (electronics)
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Radar cross section
Radar cross-section (RCS), denoted σ, also called radar signature, is a measure of how detectable an object is by radar. A larger RCS indicates that an object is more easily detected.
An object reflects a limited amount of radar energy b ...
, measure of detectability
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Cross section (physics)
In physics, the cross section is a measure of the probability that a specific process will take place in a collision of two particles. For example, the Rutherford cross-section is a measure of probability that an alpha particle will be deflec ...
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Absorption cross section
In physics
Physics is the scientific study of matter, its Elementary particle, fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department o ...
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Nuclear cross section
The nuclear cross section of a nucleus is used to describe the probability that a nuclear reaction will occur. The concept of a nuclear cross section can be quantified physically in terms of "characteristic area" where a larger area means a larg ...
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Neutron cross section
In nuclear physics, the concept of a neutron cross section is used to express the likelihood of interaction between an incident neutron and a target nucleus. The neutron cross section σ can be defined as the area in cm2 for which the number of ...
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Photoionisation cross section
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Gamma ray cross section
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''Cross Section'' (album), 1956 musical album by Billy Taylor
See also
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Cross section (fiber), microscopic view of textile fibers.
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Section (fiber bundle)
In the mathematical field of topology, a section (or cross section) of a fiber bundle E is a continuous right inverse of the projection function \pi. In other words, if E is a fiber bundle over a base space, B:
: \pi \colon E \to B
then ...
, in differential and algebraic geometry and topology, a section of a fiber bundle or sheaf
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Cross-sectional data
In statistics and econometrics, cross-sectional data is a type of data collected by observing many subjects (such as individuals, firms, countries, or regions) at a single point or period of time. Analysis of cross-sectional data usually consists ...
, in statistics, econometrics, and medical research, a data set drawn from a single point in time
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Cross-sectional study
In statistics and econometrics, cross-sectional data is a type of data collected by observing many subjects (such as individuals, firms, countries, or regions) at a single point or period of time. Analysis of cross-sectional data usually consists ...
, a scientific investigation utilizing cross-sectional data
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Cross-sectional regression In statistics and econometrics, a cross-sectional regression is a type of Regression analysis, regression in which the Dependent and independent variables, explained and explanatory variables are all associated with the same single period or point i ...
, a particular statistical technique for carrying out a cross-sectional study
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