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In the hexagonal family, the crystal is conventionally described by a right rhombic prism unit cell with two equal axes (a by a), an included angle of 120° (γ) and a height (c, which can be different from a) perpendicular to the two base axes.
Although the English "anti-prism" had been used earlier for an optical prism used to cancel the effects of a primary optimal element, [4] the first use of "antiprism" in English in its geometric sense appears to be in the early 20th century in the works of H. S. M. Coxeter. [5]
V/H/S/Beyond is a 2024 found footage science fiction horror anthology film, and the seventh installment in the V/H/S franchise. The film features segments from Jordan Downey, Christian and Justin Long , Justin Martinez , Virat Pal, Kate Siegel , and Jay Cheel .
A wedge is a polyhedron of a rectangular base, with the faces are two isosceles triangles and two trapezoids that meet at the top of an edge. [1]. A prismatoid is defined as a polyhedron where its vertices lie on two parallel planes, with its lateral faces are triangles, trapezoids, and parallelograms; [2] the wedge is an example of prismatoid because of its top edge is parallel to the ...
Square frustum A regular octahedron can be augmented on 3 faces to create a triangular frustum. A frustum's axis is that of the original cone or pyramid. A frustum is circular if it has circular bases; it is right if the axis is perpendicular to both bases, and oblique otherwise.
V/H/S is an American horror anthology franchise that includes seven found footage films, two spin-off films, and one miniseries.Created from an original story idea by Brad Miska, the plot centers around a number of disturbing VHS tapes that are discovered by innocent viewers and the possessive influence of the videos over those who see them.
In optics and lens design, the Abbe number, also known as the Vd-number or constringence of a transparent material, is an approximate measure of the material's dispersion (change of refractive index versus wavelength), with high values of Vd indicating low dispersion.
In geometry, a rhombohedron (also called a rhombic hexahedron [1] [2] or, inaccurately, a rhomboid [a]) is a special case of a parallelepiped in which all six faces are congruent rhombi. [3]