cross section

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cross section

1. Maths a plane surface formed by cutting across a solid, esp perpendicular to its longest axis
2. a section cut off in this way
3. Physics a measure of the probability that a collision process will result in a particular reaction. It is expressed by the effective area that one participant presents as a target for the other

Cross Section

 

in hydraulics, the cross section of a liquid stream (in a pipeline, channel, or river) perpendicular to the direction of the flow velocity. If the liquid motion is continuously changing, the cross section is taken as flat and equal to the cross section area of the flow.

cross section

[′krȯs ‚sek·shən]
(geology)
A diagram or drawing that shows the downward projection of surficial geology along a vertical plane, for example, a portion of a stream bed drawn at right angles to the mean direction of the flow of the stream.
An actual exposure or cut which reveals geological features.
(graphic arts)
A diagram or drawing representing a cut at right angles to an axis.
(mapping)
A horizontal grid system that is laid out on the ground for determining contours, quantities of earthwork, and so on, by means of elevations of the grid points.
(mathematics)
The intersection of an n-dimensional geometric figure in some euclidean space with a lower dimensional hyperplane.
A right inverse for the projection of a fiber bundle.
(physics)
An area characteristic of a collision reaction between atomic or nuclear particles or systems, such that the number of reactions which occur equals the product of the number of target particles or systems and the number of incident particles or systems which would pass through this area if their velocities were perpendicular to it. Also known as collision cross section.

cross section

A representation of a building, or portion thereof, drawn as if it were cut vertically to show its interior; often taken at right angles to the longitudinal axis of the building.
References in periodicals archive ?
The cross-sections were investigated the probability of the flood storage capacity between 0-33 km.
Based on this model, the correlation between the amount of fibres in the crack failure cross-section and tensile strength during composite split test has been established.
Ranking the same four runner cross-sections against each other related to how easy they are to remove from the runner plate during service of the molding cycle, it is generally understood to be:
The strength of the RC rod element cross-sections, maintained within a certain history of variations of repeated loads, was investigated in a number of works (CEB 1996; [TEXT NOT REPRODUCIBLE IN ASCII] 1999; Korentz 2005).
This difference might affect its relaxation response as compared to samples with uniform compressed cross-sections.
More force, however, will be required to break this type of contact than if the total cross-section had been covered with fabric.
3, micrographs show cross-sections of the interfacial area in the "good" and "bad" films of the previous example.
Plan views showing the location of the drill holes and updated preliminary cross-sections to assist in interpretation of the data will be posted on the Baffinland website at www.
0 m, with 1 to 3 doors, foundations and pole-top pieces in different designs, : approximately 6100 m V4A steel strip for the construction of earthing and lightning protection systems for outdoor lighting system, : approximately 17 500 m underground cables with wire numbers and cross-sections of 3 x 2.
A highly effective air cooling unit has been designed for rubber profiles whose running speeds and cross-sections permit a relatively mild cooling.