Suchergebnisse
Suchergebnisse:
Vor 16 Stunden · Liste der Raumgruppen. Es gibt 230 dreidimensionale Raumgruppen. Jede Raumgruppe hat eine Nummer und ein vollständiges Hermann-Mauguin-Symbol sowie ein Kurzsymbol (internationales Kurzsymbol). Die vollständigen Symbole haben Leerzeichen zwischen den Symmetrieoperationen, um die Lesbarkeit zu erleichtern.
Vor 16 Stunden · There are 230 space groups in three dimensions, given by a number index, and a full name in Hermann–Mauguin notation, and a short name (international short symbol). The long names are given with spaces for readability. The groups each have a point group of the unit cell.
Vor 16 Stunden · Technetium is a chemical element; it has symbol Tc and atomic number 43. It is the lightest element whose isotopes are all radioactive. Technetium and promethium are the only radioactive elements whose neighbours in the sense of atomic number are both stable. All available technetium is produced as a synthetic element.
Vor 16 Stunden · Pyridine is a basic heterocyclic organic compound with the chemical formula C 5 H 5 N. It is structurally related to benzene, with one methine group (=CH−) replaced by a nitrogen atom (=N−). It is a highly flammable, weakly alkaline, water-miscible liquid with a distinctive, unpleasant fish-like smell.
Vor 16 Stunden · Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements. It has six naturally occurring isotopes. It is one of the rarer elements in Earth's crust, with an average abundance of approximately 5 μg /kg. It occurs in some nickel and copper ores along with some native deposits, mostly in South Africa ...
Vor 16 Stunden · In mathematics, the determinant is a scalar value that is a certain function of the entries of a square matrix. The determinant of a matrix A is commonly denoted det (A), det A, or |A|. Its value characterizes some properties of the matrix and the linear map represented, on a given basis, by the matrix. In particular, the determinant is nonzero ...
Vor 16 Stunden · ac·ro·nym (ăk ′ rə-nĭm′) n. 1. A word formed by combining the initial letters of a multipart name, such as NATO from N orth A tlantic T reaty O rganization or by combining the initial letters or parts of a series of words, such as radar from ra dio d etecting a nd r anging.
