# Cylindrical Surface

## cylindrical surface

[sə′lin·drə·kəl ′sər·fəs]
(mathematics)
A surface consisting of each of the straight lines which are parallel to a given straight line and pass through a given curve. Also known as cylinder.

## Cylindrical Surface

(or cylinder), a surface traced by a line moving parallel to a given fixed line and intersecting a given curve. The fixed line is called the generatrix, and the curve is called the directrix.

If the generatrix of a cylindrical surface is parallel to the z-axis of a rectangular coordinate system, the equation of the surface is F(x, y) = 0. If the generatrix of a cylindrical surface is parallel to the line ax + by + c = 0 in the xy-plane, the equation of the surface has the form z = f(ax + by). If a circle, ellipse, hyperbola, or parabola is the directrix, the resulting cylindrical surface is said to be circular, elliptical, hyperbolic, or parabolic, respectively.

References in periodicals archive ?
A similar model of the system is also described in  for heating the walls of a cylindrical surface to simulate the process of strips welding.
The penta-prism housing, traditional symbol of SLR cameras, has been reshaped and modernized with a cylindrical surface basis.
An analysis of the electric field reveals the existence of electric charge distributed on the parallel cylindrical surface of constant radius to the central axis of the solution.
Central part of the lateral profile (segment EG) has cylindrical surface.
e]--the external cutting clearance (distance from the outer cylindrical surface of diamond part to the base) (mm); [c.
The difference between experimental and simulation results can be explained by the fact that the modeling assumed that the heated cylindrical surface has the same constant temperature.
There are now modular thermal transfer printers that can morph into sophisticated print-and-apply systems via a bolt-on assembly that takes the just-printed label from the release liner and places it on a flat or cylindrical surface.
We find that the circular grating modulates the cylindrical surface plasmon waves, launched by annular metallic slits, so that, part of the evanescent components is coupled into the propagation waves to the far field region and to cause superfocusing effect by constructive interference.
5 shows a 13 x 13 reflectarray mounted on the cylindrical surface and its individual cell.
Zappelli, "Multilayer array antennas with integrated frequency selective surfaces conformal to a circular cylindrical surface," IEEE Trans.
Therefore in practise, a complex object made up of a combination of these scatterers will have a mixed RCS performance with the cylindrical surface giving us a higher detection probability when compared with the circular surface and at better SNR when compared with the circular scatterer as well.

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