recombine
81Nonlinear optics — (NLO) is the branch of optics that describes the behaviour of light in nonlinear media, that is, media in which the dielectric polarization P responds nonlinearly to the electric field E of the light. This nonlinearity is typically only observed… …
82Novel — For other uses, see Novel (disambiguation). Not to be confused with Novell. New novels in a Oldenburg bookshop, February 2009 …
83Peripheral nervous system — The peripheral nervous system (PNS) resides or extends outside the central nervous system (CNS), which consists of the brain and spinal cord. The main function of the PNS is to connect the CNS to the limbs and organs. Unlike the central nervous… …
84Sex — An organism s sex is defined by the gametes it produces: males produce male gametes (spermatozoa, or sperm) while females produce female gametes (ova, or egg cells); individual organisms which produce both male and female gametes are termed… …
85Salt (chemistry) — This article is about the term as used in chemistry. For the chemistry of table salt, see Sodium chloride. The blue salt copper(II) sulfate in the form of the mineral chalcanthite In chemistry, salts are ionic compounds that result from the… …
86Supernova — This article is about the astronomical event. For other uses, see Supernova (disambiguation). Multiwavelength X ray, infrared, and optical compilation image of Kepler s supernova remnant, SN 1604. A supernova is a stellar explosion that is more… …
87Semiconductor — Citations missing|date=March 2008A semiconductor is a solid material that has electrical conductivity in between a conductor and an insulator; it can vary over that wide range either permanently or dynamically. [. They are used in many… …
88Species — In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is …
89Sputtering — is a process whereby atoms are ejected from a solid target material due to bombardment of the target by energetic ions. It is commonly used for thin film deposition, etching and analytical techniques (see below). Physics of sputtering Physical… …
90Water — This article is about general aspects of water. For a detailed discussion of its properties, see Properties of water. For other uses, see Water (disambiguation) …
