In order to know the meaning of the term level curve, we will proceed, first, to discover the etymological origin of the two main words that shape it:
-Curva derives from Latin, exactly from "curvus", which can be translated as "curved".
-Level, on the other hand, comes from the Provencal "Latin" and this, in turn, from the Latin "libella", which is synonymous with "small scale".
The idea of Level curve it is used in the field of topography with reference to the line which is formed by those points of the land that are located at same height . It should be remembered that topography is the discipline focused on the description and delineation of the surface of a land.
A contour, therefore, is the line that joins the points of a map that have identical altitude . In general, these lines are drawn in blue to reflect the depths of the ocean and glaciers, and in shades with shades to mark the height of the terrain.
The geodesy It also uses contour lines. This science construct maps from the determination of the magnitude and the figure of regions of the globe. The contours, in this framework, reflect the representation of a horizontal section of the relief . The difference in altitude of two successive contours is constant and is linked to the scale used on the map.
To achieve the representation of contours, what is done is to obtain parallel planes to each other through cuts on the surface of ground . These planes are located at a certain distance from each other. The level curve is the figure formed by each of these planes that cuts the ground. When the contour lines, colored differently, are projected onto the map, the representation is produced.
In addition to all of the above, we cannot ignore another series of relevant aspects of the level curve, such as the following:
-It also responds to the name of isohipsa.
-It is important to know that contours are neither crossed nor cut.
-In the same way, that the line of maximum slope that exists between two contours is the one that comes to join them through what is the shortest distance.
-No less relevant is to consider what is known as equidistance between contours. This term includes the distance that comes to exist between what are several imaginary planes that come to cut and that is always the same for a given map.
-In the planes it is necessary to be aware that the darkest lines are those known as master contours.
-There are also auxiliary contour lines, which are those between two consecutive contour lines and which are identified as lower level equidistance curves.