Primary field — In theoretical physics, a primary field is a field operator in quantum field theory especially conformal field theory or a theory with supersymmetry that is invariant under the positive frequency modes of the Virasoro algebra or under one half of … Wikipedia
Primary — The word Primary when used alone may refer to:* Primary (band), from Australia * primary circuit, electrical circuit in a Transformer that receives current, as opposed to secondary circuit * Primary (film), 1960 documentary * Primary (LDS Church) … Wikipedia
Primary source — [ [http://www.lib.umd.edu/guides/primary sources.html Primary, Secondary and Tertiary Sources, UM Libraries] ] [ [http://www.library.jcu.edu.au/LibraryGuides/primsrcs.shtml JCU Primary, Secondary Tertiary Sources] ] is a term used in a number of… … Wikipedia
Field research — Field research/primary market research has traditional been thought different from methods of research conducted in a laboratory or academic setting. It was developed originally from anthropology and is sometimes know as participant research, or… … Wikipedia
Field emission — (FE) is the emission of electrons from the surface of a condensed phase into another phase due to the presence of high electric fields. In this phenomenon, electrons with energies below the Fermi level tunnel through the potential barrier at the… … Wikipedia
Field Day — is an annual amateur radio exercise, widely sponsored by IARU regions and member organizations, encouraging emergency communications preparedness among amateur radio operators. In the United States, it is typically the largest single emergency… … Wikipedia
Field crumpets — is a game played with two teams of players which try to score points by hitting the crumpet into the opposing team s goal using their crumpet sticks . Created in 1996 by Robbie Overton [ [http://www.6newslawrence.com/news/2004/jul/15/crumpets/]… … Wikipedia
Field Target — is an outdoor air gun discipline originating in the United Kingdom, on the late 1980s, but gaining popularity worldwide.UK RulesIn UK (United Kingdom) rules, competitors aim to shoot the small “kill” zone that forms part of a larger metal… … Wikipedia
Field-tube boiler — Field tube, sectioned A Field tube boiler (also known as a bayonet tube[1] ) is a form of water tube boiler where the water tubes are single ended. The tubes are closed at one end, and they contain a concentric inner tube. Flow is thus separated… … Wikipedia
Primary succession — is one of two types of ecological succession and biological succession of plant life, and occurs in an environment in which new substrate, devoid of vegetation and usually lacking soil, is deposited (for example a lava flow). (The other type of… … Wikipedia
Field Dalling — is a small village, situated about 4 miles west of Holt in the North Norfolk district of Norfolk in England and about three miles from the coast. The village had a population of 273 inhabitants according to the 2001 census. Field Dalling is part… … Wikipedia
