screw group
1Screw axis — The screw axis (helical axis or twist axis) of an object is a parameter for describing simultaneous rotation and translation components of that object.The axis is a directed line in space, along which a translation may occur, and about which… …
2Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …
3screw — {{11}}screw (n.) c.1400, from M.Fr. escroue nut, cylindrical socket, screwhole, of uncertain etymology; not found in other Romanic languages. Perhaps via Gallo Romance *scroba or W.Gmc. *scruva from V.L. scrobis screw head groove, in classical… …
4screw axis — Crystall. a symmetry element of a space group such that a rotation of the lattice about the axis and a translation of the lattice some fraction of the lattice s unit distance brings the lattice back to its original position. [1900 05] * * * …
5screw axis — Crystall. a symmetry element of a space group such that a rotation of the lattice about the axis and a translation of the lattice some fraction of the lattice s unit distance brings the lattice back to its original position. [1900 05] …
6Space group — In mathematics and geometry, a space group is a symmetry group, usually for three dimensions, that divides space into discrete repeatable domains. In three dimensions, there are 219 unique types, or counted as 230 if chiral copies are considered… …
7The Turn of the Screw — Infobox Book | name = The Turn of the Screw image caption = Cover of 1999 Norton edition of The Turn of the Screw author = Henry James country = United Kingdom, United States language = English genre = Novella, Gothic fiction publisher = William… …
8Symmetry group — Not to be confused with Symmetric group. This article is about the abstract algebraic structures. For other meanings, see Symmetry group (disambiguation). A tetrahedron can be placed in 12 distinct positions by rotation alone. These are… …
9Euclidean group — In mathematics, the Euclidean group E ( n ), sometimes called ISO( n ) or similar, is the symmetry group of n dimensional Euclidean space. Its elements, the isometries associated with the Euclidean metric, are called Euclidean moves.These groups… …
10The Turn of the Screw (opéra) — Le Tour d écrou The Turn of the Screw Le Tour d écrou Nb. d actes 2 Musique Benjamin Britten Livret Myfanwy Piper Langue originale Anglais Création 14 …
