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The symbol of a space group is defined by combining the uppercase letter describing the lattice type with symbols specifying the symmetry elements. The symmetry elements are ordered the same way as in the symbol of corresponding point group (the group that is obtained if one removes all translational components from the space group).
Oreo (/ ˈ ɔːr i oʊ /; stylized in all caps) is a brand of sandwich cookie consisting of two cocoa biscuits or cookie pieces with a sweet fondant filling. It was introduced by Nabisco on March 6, 1912, and through a series of corporate acquisitions, mergers, and splits, both Nabisco and the Oreo brand have been owned by Mondelez International since 2012.
Chromium is the fourth transition metal found on the periodic table, and has a ground-state electron configuration of [ Ar] 3d 5 4s 1. It is the first element in the periodic table whose configuration violates the Aufbau principle. Exceptions to the principle also occur later in the periodic table for elements such as copper, niobium and ...
NATO Joint Military Symbology is the NATO standard for military map symbols. Originally published in 1986 as Allied Procedural Publication 6 ( APP-6 ), NATO Military Symbols for Land Based Systems, the standard has evolved over the years and is currently in its fifth version (APP-6D). The symbols are designed to enhance NATO 's joint ...
The Rubik's Cube group is a group that represents the structure of the Rubik's Cube mechanical puzzle. Each element of the set corresponds to a cube move, which is the effect of any sequence of rotations of the cube's faces. With this representation, not only can any cube move be represented, but any position of the cube as well, by detailing ...
List of chemical elements. As of April 2024, 118 chemical elements have been identified and named officially by IUPAC. A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z ). [1]
8 is the first proper Leyland number of the form xy + yx, where in its case x and y both equal 2. [4] 8 is the sum between the first pair of twin-primes ( 3, 5 ), and the only twin-prime sum that is not a multiple of 3 or 12. 8 is the sixth Fibonacci number and the first even, non-prime Fibonacci number.
The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; the pattern of position detection was found and determined by applying the least-used ratio (1:1:3:1:1) in black ...