tangential surface

tangential surface

[tan′jen·chəl ′sər·fəs]
(optics)
A surface containing the primary foci of points in a plane perpendicular to the optical axis of an astigmatic system.
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References in periodicals archive ?
Roughness values of the radial surface were also determined to be slightly higher than that of the tangential surface, as can be seen in Table 2.
The load was applied through the bearing block to the tangential surface nearest to the pith.
color values of tangential surface earlywood and latewood were measured with the Minolta CR-10 colorimeter.
As a result, surface checks from wood drying are more evident on the tangential surface (Wu and Milota 1995).
The tangential surface to be densified was the side close to the bark.
The relatively poor predictions obtained from NIR spectra from the tangential surface may be due to the fact that the scanned surface (a 3/4-inch-diameter spot, in this case) may be only either earlywood or latewood.
Therefore, instead of cutting grooves, holes with the diameter of 1 mm were cut on the tangential surface of the plate at an interval of 20 mm.
In this study the tangential surface was not examined because it does not represent all of the wood property variation present in a short clear wood sample.
This can be easily achieved if a mechanical pressure is applied perpendicularly to the tangential surface of squares during vacuum drying [2].
Editors of Encyclopedia of Wood say jelutong wood is "very lustrous, but contains slit-like radial latex passages on tangential surfaces, in clusters or rows about 3 feet apart.
Boring yields clean, complete cores only on tangential surfaces, either flat ridges or flat furrows.