isolux diagrams The contours provide the points of equal illuminance, in footcandles or lux, on the floor or wall plane, from a specific stated mounting position. The diagram can be used to assess the distribution characteristics of the luminaire in addition to determining lighting levels [1].

*In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.*Classification of Critical Points - Contour Diagrams and Gradient Fields As we saw in the lecture on locating the critical points of a function of 2 variables there were three possibilities. A critical point could be a local maximum, a local minimum, or a saddle point. There are 3 ways of classifying critical points. Nov 28, 2011 · IGCSE Contour Diagrams Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website.