normal surface


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normal surface

[′nȯr·məl ′sər·fəs]
(optics)
The surface that is generated by taking, at each point of the ray surface, the intersection of the tangent plane to the ray surface at that point with the perpendicular from the origin to this plane.
References in periodicals archive ?
But rather, large doughs "tail out" because, when using a metal mixing tool, the normal surface tension barrier is impossible to immediately penetrate.
"But the ball just doesn't move the same as it does on a normal surface.
Without activity, the world's normal surface temperature is probably going to rise by 3 degrees centigrade this century.
For them, it has been over a decade of teeth gnashing and perpetual fear as what started as a normal surface erosion over 20 years ago has bow developed into a deep gully which has systematically cutting up the community and is bringing down homes on its way and taking lives in the process.
Current makeup water sources for the TSF are from normal surface run-off, groundwater wells internal to the TSF, and from base underdrain towers that access process water underlying the TSF.
The numerical value of the surface tension affects the normal surface tension, while the surface tension gradient affects the tangential surface tension.
They are said to be the main contributing factor to colder than normal surface waters over the tropical equatorial Pacific and warmer than normal waters over the western Pacific.
These deviations from normal surface temperatures could have large scale impacts not only on ocean processes but also on global weather and climate, said Director Met office, Mohammad Hanif.
Let (X, [DELTA]) be a log canonical surface and let f: X [right arrow] Y be a projective birational morphism onto a normal surface Y.
Malnutrition, trauma, persistent wetting and micro environmental conditions interfere with normal surface protective mechanisms such as sebaceous secretions lead to activation of dormant zoospores (Howard, 1986).
This year, more than 41 percent of California's irrigated farmland will lose 80 percent or more of its normal surface water allocation, according to a new survey by the California Farm Water Coalition.
Normal surface parking with ramps would have given us 35 to 36 cars per floor and we would have had to go 8 to 9 metres deep for achieving 100 plus cars in three parking floors.