cross section

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Related to cross-section: cross-sectional study

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 downstream conditions include checking of cross-section and longitudinal profile of stream.
Codes do not provide calculation methods suitable in all cases to evaluate the strength (shear strength) of circular cross-section elements of reinforced concrete (AC/ 318-05:2005 Building Code Requirements for Structural Concrete; BS8 100:1985 Structural Use of Concrete: Part I: Code for Practice for Design and Construction; EHE 1998:1998 EHE Instruction for Structural Concrete; CEB-FIP 1990:1993 CEB-FIP Model Code; SNiP 2.
The method of calculating the coordinates of fibre cut-through points on the cross-section surface is illustrated in Fig.
Teijin Fibers' portfolio also includes polyester fibers with a triangular cross-section, offering a glossy appearance; hollow, thin- walled polyester fibers that trap large quantities of non-flowing air for thermal insulation; polyester fibers with a cross-section of four flat peaks for superior sweat absorption and quick drying and a false-twisted polyester fiber with an irregular cross-section.
full-round submerged cross-section (machined into a single mold plate); and
Such location has the smallest cross-section if no more significant defects exist in other places.
To emphasize the differences in relief in a comparatively flat area, the vertical scale may be expanded relatively with the horizontal scale, producing a cross-section with vertical exaggeration.
Similarly, the cross sections were aged independently and then assigned a definitive cross-section age by mutual agreement.
The four articles in this mini-monograph represent a cross-section of results from human studies on mercury exposure and health outcomes presented at the most recent International Conference on Mercury as a Global Pollutant (ICMGP) held 28 June to 2 July 2004 in Ljubljana, Slovenia.
Key words: grinding, chip, average cross-section of chip, abrasive grain
Since the load carrying cross-section can be increased to accommodate lower strengths, the casting can be supplied in the highest ductility with strength levels that are compatible to the rolled structural shapes.