Dilation geometry calculator5/28/2023 In the field of measurements, the scale factor of an instrument is sometimes referred to as sensitivity. The basic equation for it is image over preimage. For example, doubling distances corresponds to a scale factor of two for distance, while cutting a cake in half results in pieces with a scale factor for volume of one half. C is also the coefficient of x, and may be called the constant of proportionality of y to x. In the equation y = Cx, C is the scale factor for x. In most cases, the homothetic transformations are non-linear transformations.Ī scale factor is usually a decimal which scales, or multiplies, some quantity. Scaling is a linear transformation, and a special case of homothetic transformation (scaling about a point). It also includes the case in which one or more scale factors are equal to zero ( projection), and the case of one or more negative scale factors (a directional scaling by -1 is equivalent to a reflection). In the most general sense, a scaling includes the case in which the directions of scaling are not perpendicular. When the scale factor is a positive number smaller than 1, scaling is sometimes also called contraction or reduction. When the scale factor is larger than 1, (uniform or non-uniform) scaling is sometimes also called dilation or enlargement. It occurs, for example, when a faraway billboard is viewed from an oblique angle, or when the shadow of a flat object falls on a surface that is not parallel to it. a square may change into a rectangle, or into a parallelogram if the sides of the square are not parallel to the scaling axes (the angles between lines parallel to the axes are preserved, but not all angles). Non-uniform scaling changes the shape of the object e.g. Non-uniform scaling ( anisotropic scaling) is obtained when at least one of the scaling factors is different from the others a special case is directional scaling or stretching (in one direction). More general is scaling with a separate scale factor for each axis direction. Uniform scaling happens, for example, when enlarging or reducing a photograph, or when creating a scale model of a building, car, airplane, etc. A scale factor of 1 is normally allowed, so that congruent shapes are also classed as similar. The result of uniform scaling is similar (in the geometric sense) to the original. In affine geometry, uniform scaling (or isotropic scaling ) is a linear transformation that enlarges (increases) or shrinks (diminishes) objects by a scale factor that is the same in all directions. Each iteration of the Sierpinski triangle contains triangles related to the next iteration by a scale factor of 1/2
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