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- σThe symbol for cross sectional area is typically denoted σ (sigma)1. It is expressed in units of area, more specifically in barns1. The size of a target's image on radar is measured by the radar cross section or RCS, often represented by the symbol σ and expressed in square meters2. This does not equal geometric area. A perfectly conducting sphere of projected cross sectional area 1 m 2 (i.e. a diameter of 1.13 m) will have an RCS of 1 m 22.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.Cross section is typically denoted σ (sigma) and is expressed in units of area, more specifically in barns.en.wikipedia.org/wiki/Cross_section_(physics)The size of a target's image on radar is measured by the radar cross section or RCS, often represented by the symbol σ and expressed in square meters. This does not equal geometric area. A perfectly conducting sphere of projected cross sectional area 1 m 2 (i.e. a diameter of 1.13 m) will have an RCS of 1 m 2.en.wikipedia.org/wiki/Radar_cross_section
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Cross section (geometry) - Wikipedia
Cavalieri's principle states that solids with corresponding cross-sections of equal areas have equal volumes. The cross-sectional area ($${\displaystyle A'}$$) of an object when viewed from a particular angle is the total area of the orthographic projection of the object from that angle. For example, a cylinder … See more
In geometry and science, a cross section is the non-empty intersection of a solid body in three-dimensional space with a plane, or the analog in higher-dimensional spaces. Cutting an object into slices creates many parallel cross … See more
If a plane intersects a solid (a 3-dimensional object), then the region common to the plane and the solid is called a cross-section of the solid. A plane containing a cross … See more
A cross section of a polyhedron is a polygon.
The conic sections – circles, ellipses, parabolas, … See moreIn analogy with the cross-section of a solid, the cross-section of an n-dimensional body in an n-dimensional space is the non-empty intersection of the body with a … See more
Wikipedia text under CC-BY-SA license Cross-sectional Area formulas for different shapes and …
WEBJun 6, 2023 · Learn how to calculate the cross-sectional area of various structural elements such as beams, columns, slabs, etc. using formulas and examples. The cross-sectional area symbol is A and the unit is m2 or …
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WEBThe map legend or key that explains all the symbols on the map. 3. Geologic cross-section(s) of the map area. These will be explored further in the next chapter. Figure 16.2: 1) Geologic map, 2) legend and 3) …
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WEBNov 15, 2016 · A = pi*R². Most wire or string is made with a circular cross section of some particular radius and diameter. The area of that cross section is the well known A = pi*R² which is colloquially pronounced as …
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