Search results
Results from the WOW.Com Content Network
Elliptic coordinate system. Elliptic coordinate system. In geometry, the elliptic coordinate system is a two-dimensional orthogonal coordinate system in which the coordinate lines are confocal ellipses and hyperbolae. The two foci and are generally taken to be fixed at and , respectively, on the -axis of the Cartesian coordinate system.
In affine geometry, uniform scaling (or isotropic scaling[1]) is a linear transformation that enlarges (increases) or shrinks (diminishes) objects by a scale factor that is the same in all directions (isotropically). The result of uniform scaling is similar (in the geometric sense) to the original. A scale factor of 1 is normally allowed, so ...
This scale was used by Revell for some ship models because it was one-half the size of the standard scale for wargaming models used by the U.S. Army. 1:535: 0.022: 0.570 mm: Ship models: Scale used by Revell for USS Missouri ship. Sometimes called "box scale" because chosen to fit a box size. 1:500: 0.610 mm: Architecture. Ship models. Die-cast ...
This implies that the vertical scale factor, h, equals the horizontal scale factor, k. Since k = sec φ, so must h. The graph shows the variation of this scale factor with latitude. Some numerical values are listed below. at latitude 30° the scale factor is k = sec 30° = 1.15, at latitude 45° the scale factor is k = sec 45° = 1.41,
The 1:200 scale is a modeling scale used in the model building hobby. A vehicle or building made in the 1:200 scale, fits 200 times inside its real-life counterpart (in one dimension; it would fit 8 million times if packed three-dimensionally, and would weigh 8 million times less). A large percentage of models produced in this scale are ...
A conformal map acting on a rectangular grid. Note that the orthogonality of the curved grid is retained. While vector operations and physical laws are normally easiest to derive in Cartesian coordinates, non-Cartesian orthogonal coordinates are often used instead for the solution of various problems, especially boundary value problems, such as those arising in field theories of quantum ...
A scale model of a hydropower turbine. A scale model is a physical model that is geometrically similar to an object (known as the prototype). Scale models are generally smaller than large prototypes such as vehicles, buildings, or people; but may be larger than small prototypes such as anatomical structures or subatomic particles.
1:48 scale is a scale commonly used in diecast models, plastic models made from kits, and construction toys.It is especially popular with manufacturers of model aircraft and model trains, where it is known as "O scale". 1:48 is also a popular scale among Lego enthusiasts, since it is approximately the scale of the Lego minifigure relative to a six-foot tall human.