crystal systems
41Quartz crystal microbalance — A quartz crystal microbalance (QCM) measures a mass per unit area by measuring the change in frequency of a quartz crystal resonator. The resonance is disturbed by the addition or removal of a small mass due to oxide growth/decay or film… …
42Wigner crystal — Structure of a two dimensional Wigner crystal in a parabolic potential trap with 600 electrons. Triangles and squares mark positions of the topological defects. A Wigner crystal is the solid (crystalline) phase of electrons first predicted by… …
43Liquid crystal display — LCD redirects here. For other uses, see LCD (disambiguation). Reflective twisted nematic liquid crystal display. Polarizing filter film with a vertical axis to polarize light as it enters. Glass substrate with ITO electrodes. The shapes of these… …
44Computers and Information Systems — ▪ 2009 Introduction Smartphone: The New Computer. The market for the smartphone in reality a handheld computer for Web browsing, e mail, music, and video that was integrated with a cellular telephone continued to grow in 2008. According to… …
45Microelectromechanical systems — (MEMS) (also written as micro electro mechanical, MicroElectroMechanical or microelectronic and microelectromechanical systems) is the technology of very small mechanical devices driven by electricity; it merges at the nano scale into… …
46Turtle Beach Systems — is a sound card and headphone manufacturer and direct competitor with Creative Labs branded Sound Blaster. In 1995, the company merged with Voyetra, a company that made custom software for sound cards, to form Voyetra Turtle Beach Inc which is… …
47Comparison of issue-tracking systems — This article is a comparison of issue tracking systems which are notable, including bug tracking systems, help desk and service desk issue tracking systems, and asset management systems. The comparison includes client server application,… …
48History of Crystal Palace F.C. — Football club infobox clubname = Crystal Palace current = Crystal Palace F.C. season 2007 08 fullname = Crystal Palace Football Club nickname = The Eagles founded = 1905 ground = Selhurst Park London England capacity = 26,309 chairman =… …
49David Crystal — at the Humber Mouth Festival 2009 Born July 6, 1941 (1941 07 06) (age 70) Lisburn, Northern Ireland …
50David Crystal — Saltar a navegación, búsqueda David Crystal, OBE (nacido en 1941 en Lisburn, Irlanda del Norte) es un lingüista, académico y autor. Creció en Holyhead, Gales del Norte, y Liverpool, Inglaterra donde asistió al Saint Mary s college desde 1951.… …
