a representative sample of a complex group; as, the town contained a cross section of the American population.
a measure of the probability that a nucleus will interact in a specified way with a bombarding particle, expressed as the effective area that the nucleus presents to the particle; -- called also nuclear cross section.
to create one or a series of cross sections{3} by cutting (an object) into thin slices.
An architectural or construction drawing that has been cut vertically to reveal the structure behind the surface. Back to the top
A measure of the probability that a nuclear reaction will occur. It is the apparent or effective area presented by a target nucleus or particle to an oncoming radiation. The barn is the standard unit for the cross section. Symbol: . Related to barn. Related to capture cross section. Related to fission cross section. Related to scattering cross section.
(cross hatch) In a blueprint a Cross Section refers to a view that would be exposed on one piece of a part should the part be sliced in two.
A view of the interior of an object that is represented as being cut in two, the cut surface presenting the cross section of the object.
A measure of the probability that a collision between two given particles will result in a specific event, with area units. At the Tevatron, the cross section for top quark production at 1.8 TeV is approximately 6.2 picobarns, where one picobarn is 10 to the -12 barns.
Sectioned shape of material viewed from the end.
A shape formed by the intersection of a plane and a geometric solid.
A cross section is a section perpendicular to the long axis of the object. Thus, in a stem, a cross section would be a cut cross ways (perpendicular to the length) on the stem.
a two-dimensional figure that is the intersection of a three-dimensional solid and a plane
A seal as viewed if cut at right angles to the molding line, showing internal structure
a section created by a plane cutting a solid perpendicular to its longest axis
(physics) the probability that a particular interaction (as capture or ionization) will take place between particles; measured in barns
a cut through something (such as a feather shaft) at an angle perpendicular to its axis in order to view its interior structure
a diagram that shows features of a vertical section or a slice of something such as the earth or the water column
a drawing that looks as if you've cut the feature in half
a group of predefined nodes in a plane
a vertical slice through the atmosphere displaying some parameter of interest, e
a cut through a structure or tissue that is perpendicular to its main axis.
A section normal to the trend of a channel or flow.
A horizontal slice of the landscape as it appears in a side view (elevation). It may also refer to certain characteristics of a population.
Section cut at a right angle to any long, narrow structure.
A diagram or drawing that shows the sequence of rocks and sediment layers as they occur in a vertical plane; commonly drawn from the ground surface down to some selected depth, such as the bedrock surface.
side or end section of object.
An o-ring as viewed if cut at right angles to the parting line, thus showing its internal structure.
A diagram or drawing that shows features transected by a given plane; specifically, a vertical section drawn at right angles to the longer axis of a geologic feature.
a vertical slice of reflectivity returns taken through a section of a storm used for detecting certain characteristics.
the intersection of a body in 3-dimensional space with a plane, or of a body in 2-dimensional space with a line
A 3-D profile of a slice of an object.
A plane cutting through an object, or a cutaway view showing the inner workings of an object. Cross sections are used to show assembly and other details needed to understand a Unit.
A section formed by a plane cutting through the Earth, at right angles to an axis. This allows one to see the interior composition of the Earth. Examples of cross section illustrations can be seen in the distance, focus, and lithosphere definitions in this glossary.
In imaging, a cross-section allows doctors to see slices of the human body - much like viewing the slices of a loaf of bread.
A view formed by a plane cutting through an object usually at right angles to its axes.
a view into the inside of a semiconductor made by cutting through the device. Cross sections allow the depth of diffusions into the semiconductor and the thickness of various films and their relationships to be examined.
A diagram of a vertical section through a volume, as opposed to the surface, "bird's eye," or plan view of a map. Cross sections are useful for displaying the types and orientations of subsurface structures and formations.
The plane figure obtained by a solid's intersection with a plane.
a measure of the probability of an interaction between a particle and a target nucleus, expressed in barns (1 barn = 10-24 cm2).
The width of an O-ring or a seal view showing the internal structure at right angles to the mold parting line.
1. A drawing or photograph of a plane surface exposed by cutting through. 2. A vertical section of the ground surface taken at right angles to a survey line.
a diagrammatic or fully realized rendering of an object showing it as if cut right through, usually at right angles to the main axis.
A seal cut at right angles to the mold parting line. Also known as width.
Diagrammatic presentation of the right-of-way profile which is at right angles to the centerline at a given location.
1. In weather analysis and forecasting, a graphic representation of a vertical surface in the atmosphere, along a given horizontal line or path, and extending from the earth's surface to a given altitude. The type of data and analysis presented on such a cross-sectional chart depends upon its purpose. In meteorology, a synoptic cross section is prepared from synoptic weather data. In aviation, a flight cross section (or route cross section) is a graphic forecast of conditions expected to be encountered along the proposed flight route; therefore, time varies along the horizontal axis of the chart. Compare time section. 2. Generally, a two-dimensional, representative picture of a three-dimensional entity; usually a section or slice perpendicular to the principal axis of the entity, or passing through its center, or otherwise representative of a given aspect of the entity. See scattering cross section; compare profile, contour.
In nuclear and particle physics, the concept of a cross section is used to express the likelihood of interaction between particles. It can therefore characterize the probability that a particular nuclear reaction will take place, or the statistical nature of scattering events. The cross section is expressed in units of area, usually in barn.
In geometry, a cross section is the intersection of a body in 2-dimensional space with a line, or of a body in 3-dimensional space with a plane, etc. More plainly, when cutting an object into slices one gets many parallel cross sections.