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2. Normal distribution - Wikipedia

   en.wikipedia.org/wiki/Normal_distribution

   In the bottom-right graph, smoothed profiles of the previous graphs are rescaled, superimposed and compared with a normal distribution (black curve). Main article: Central limit theorem The central limit theorem states that under certain (fairly common) conditions, the sum of many random variables will have an approximately normal distribution.

3. Paschen's law - Wikipedia

   en.wikipedia.org/wiki/Paschen's_law

   He found an equation that fit these curves, which is now called Paschen's law. [ 3 ] At higher pressures and gap lengths, the breakdown voltage is approximately proportional to the product of pressure and gap length, and the term Paschen's law is sometimes used to refer to this simpler relation. [ 5 ]

4. List of curves - Wikipedia

   en.wikipedia.org/wiki/List_of_curves

   This is a list of Wikipedia articles about curves used in different fields: mathematics (including geometry, statistics, and applied mathematics), ...

5. List of mathematical shapes - Wikipedia

   en.wikipedia.org/wiki/List_of_mathematical_shapes

   Algebraic Curves ¿ Curves ¿ Curves: Cubic Plane Curve: Quartic Plane Curve: Rational Curves: Degree 2: Conic Section(s) Unit Circle: Unit Hyperbola: Degree 3: Folium of Descartes: Cissoid of Diocles: Conchoid of de Sluze: Right Strophoid: Semicubical Parabola: Serpentine Curve: Trident Curve: Trisectrix of Maclaurin: Tschirnhausen Cubic ...

6. Normal (geometry) - Wikipedia

   en.wikipedia.org/wiki/Normal_(geometry)

   A polygon and its two normal vectors A normal to a surface at a point is the same as a normal to the tangent plane to the surface at the same point.. In geometry, a normal is an object (e.g. a line, ray, or vector) that is perpendicular to a given object.

7. Track geometry - Wikipedia

   en.wikipedia.org/wiki/Track_geometry

   The third type is reverse curve which comprises two or more simple curves that has the opposite direction of curvature (sometime known as "S" curve or serpentine curve). [ 3 ] [ 4 ] In Australia, there is a special definition for a bend (or a horizontal bend ) which is a connection between two tangent tracks at almost 180 degrees (with ...