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2. Numeric precision in Microsoft Excel - Wikipedia

   en.wikipedia.org/wiki/Numeric_precision_in...

   In the second line, the number one is added to the fraction, and again Excel displays only 15 figures. In the third line, one is subtracted from the sum using Excel. Because the sum has only eleven 1s after the decimal, the true difference when ‘1’ is subtracted is three 0s followed by a string of eleven 1s.

3. Interferometric visibility - Wikipedia

   en.wikipedia.org/wiki/Interferometric_visibility

   Examples include as optics, quantum mechanics, water waves, sound waves, or electrical signals. Visibility is defined as the ratio of the amplitude of the interference pattern to the sum of the powers of the individual waves. The interferometric visibility gives a practical way to measure the coherence of two waves

4. Visibility - Wikipedia

   en.wikipedia.org/wiki/Visibility

   The international definition of fog is a visibility of less than 1 km (3,300 ft); mist is a visibility of between 1 km (0.62 mi) and 2 km (1.2 mi) and haze from 2 km (1.2 mi) to 5 km (3.1 mi). Fog and mist are generally assumed to be composed principally of water droplets, haze and smoke can be of smaller particle size.

5. Viewshed analysis - Wikipedia

   en.wikipedia.org/wiki/Viewshed_Analysis

   The analysis uses the elevation value of each cell of the digital elevation model (DEM) to determine visibility to or from a particular cell. The location of this particular cell varies depending on the needs of the analysis. For example, a viewshed analysis is commonly used to locate communication towers or determining the view from a road.

6. Radiosity (computer graphics) - Wikipedia

   en.wikipedia.org/wiki/Radiosity_(computer_graphics)

   Vis(x,x' ) is a visibility function, defined to be 1 if the two points x and x' are visible from each other, and 0 if they are not. The geometrical form factor (or "projected solid angle") F ij . F ij can be obtained by projecting the element A j onto the surface of a unit hemisphere, and then projecting that in turn onto a unit circle around ...

7. Kahan summation algorithm - Wikipedia

   en.wikipedia.org/wiki/Kahan_summation_algorithm

   The algorithm performs summation with two accumulators: sum holds the sum, and c accumulates the parts not assimilated into sum, to nudge the low-order part of sum the next time around. Thus the summation proceeds with "guard digits" in c , which is better than not having any, but is not as good as performing the calculations with double the ...

8. Visibility graph - Wikipedia

   en.wikipedia.org/wiki/Visibility_graph

   Visibility graphs may be used to find Euclidean shortest paths among a set of polygonal obstacles in the plane: the shortest path between two obstacles follows straight line segments except at the vertices of the obstacles, where it may turn, so the Euclidean shortest path is the shortest path in a visibility graph that has as its nodes the start and destination points and the vertices of the ...

9. Plotting algorithms for the Mandelbrot set - Wikipedia

   en.wikipedia.org/wiki/Plotting_algorithms_for...

   The simplest algorithm for generating a representation of the Mandelbrot set is known as the "escape time" algorithm. A repeating calculation is performed for each x, y point in the plot area and based on the behavior of that calculation, a color is chosen for that pixel.