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2. Planar straight-line graph - Wikipedia

   en.wikipedia.org/wiki/Planar_straight-line_graph

   Planar straight-line graph. In computational geometry and geometric graph theory, a planar straight-line graph (or straight-line plane graph, or plane straight-line graph), in short PSLG, is an embedding of a planar graph in the plane such that its edges are mapped into straight-line segments. [1] Fáry's theorem (1948) states that every planar ...

3. Current–voltage characteristic - Wikipedia

   en.wikipedia.org/wiki/Current–voltage...

   An I–V curve which is a straight line through the origin with positive slope represents a linear or ohmic resistor, the most common type of resistance encountered in circuits. It obeys Ohm's law; the current is proportional to the applied voltage over a wide range. Its resistance, equal to the reciprocal of the slope of the line, is constant ...

4. Wikipedia:Graphs and charts - Wikipedia

   en.wikipedia.org/wiki/Wikipedia:Graphs_and_charts

   The Google Chart API allows a variety of graphs to be created. Livegap Charts creates line, bar, spider, polar-area and pie charts, and can export them as images without needing to download any tools. Veusz is a free scientific graphing tool that can produce 2D and 3D plots. Users can use it as a module in Python.

5. Line graph - Wikipedia

   en.wikipedia.org/wiki/Line_graph

   In the mathematical discipline of graph theory, the line graph of an undirected graph G is another graph L(G) that represents the adjacencies between edges of G. L(G) is constructed in the following way: for each edge in G, make a vertex in L(G); for every two edges in G that have a vertex in common, make an edge between their corresponding vertices in L(G).

6. Open-circuit saturation curve - Wikipedia

   en.wikipedia.org/wiki/Open-circuit_saturation_curve

   As the iron saturates with higher excitation and thus higher magnetic flux, the reluctance increases, and the OCC deflects down from the air-gap line. [1] The curve is obtained by rotating the generator at the rated RPM with the output terminals disconnected and the output voltage typically going to at least 120% of the rated for the device ...

7. Planar graph - Wikipedia

   en.wikipedia.org/wiki/Planar_graph

   Utility graph K3,3. In graph theory, a planar graph is a graph that can be embedded in the plane, i.e., it can be drawn on the plane in such a way that its edges intersect only at their endpoints. In other words, it can be drawn in such a way that no edges cross each other. [1][2] Such a drawing is called a plane graph, or a planar embedding of ...

8. Smith chart - Wikipedia

   en.wikipedia.org/wiki/Smith_chart

   The magnitude of a complex number is the length of a straight line drawn from the origin to the point representing it. The Smith chart uses the same convention, noting that, in the normalised impedance plane, the positive x -axis extends from the center of the Smith chart at z T = 1 ± j 0 {\displaystyle \,z_{\mathsf {T}}=1\pm j0\,} to the ...

9. Log–log plot - Wikipedia

   en.wikipedia.org/wiki/Log–log_plot

   In science and engineering, a log–log graph or log–log plot is a two-dimensional graph of numerical data that uses logarithmic scales on both the horizontal and vertical axes. Power functions – relationships of the form – appear as straight lines in a log–log graph, with the exponent corresponding to the slope, and the coefficient ...