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First, a minor correction to your formula: $$z^2 = a^2 - \left(c - \sqrt{x^2 + y^2}\right)^2$$ represents a torus where the distance from the origin to the center of the "tube" is equal to $c$ and the radius of the "tube" is equation to $a$.
In geometry, a torus is a surface of revolution generated by revolving a circle in three-dimensional space about an axis that is coplanar with the circle. In optics, a toroidal surface is described with the circle radius 𝑟 and the distance 𝑅 to the -axis, known as the radius of rotation.
The parametric equations and describe a torus. The left graphics window shows a rectangular domain of points (u, t). The right window shows the torus. Try dragging the corners of the rectangle around to restrict the domain.
6 dni temu · The torus surface is implemented in the Wolfram Language as Torus[x, y, z, c-a, c+a], and the solid torus as FilledTorus[x, y, z, c-a, c+a]. The three standard tori are illustrated below, where the first image shows the full torus, the second a cut-away of the bottom half, and the third a cross section of a plane passing through the z -axis .
18 sie 2015 · Introduction. Our views of skin structure tend to be static and two-dimensional and focus largely on biological functions 1. Often overlooked is the dynamism of skin, which involves multidirectional stretch and compression, allowing for low friction gliding movement 2.
29 maj 2019 · (a) Human skin is composed of three tissues, an outer cell-rich epidermis, an extracellular-matrix-rich dermis and a layer of fat-rich adipocytes. The dermis is vascularised and contains the major portions of skin organelles (such as hair follicles).
1 sty 2015 · This chapter describes the structure of the skin and its stratified nature, emphasising and focusing on the skin’s main barrier to permeation—the stratum corneum—and how its structure and its nature, compared to underlying layers, results in a...
