positive carrier
81Space charge — is a concept in which excess electric charge is treated as a continuum of charge distributed over a region of space (either a volume or an area) rather than distinct point like charges. This model typically applies when charge carriers have been… …
82Valve RF amplifier — A valve RF amplifier (UK and Aus.) or tube amplifier (U.S.), is a device for electrically amplifying the power of an electrical , typically (but not exclusively) radio frequency signals.Low to medium power valve amplifiers for frequencies below… …
83Glossary of American football — The following terms are used in American football and Canadian football, but see also the glossary of Canadian football. Contents: 0–9 A B C D E F G H I J K L M N O P Q R S T U V …
84Australia — /aw strayl yeuh/, n. 1. a continent SE of Asia, between the Indian and the Pacific oceans. 18,438,824; 2,948,366 sq. mi. (7,636,270 sq. km). 2. Commonwealth of, a member of the Commonwealth of Nations, consisting of the federated states and… …
85Pakistan — /pak euh stan , pah keuh stahn /, n. 1. Islamic Republic of, a republic in S Asia, between India and Afghanistan: formerly part of British India; known as West Pakistan from 1947 71 to distinguish it from East Pakistan (now Bangladesh).… …
86electrochemical reaction — ▪ chemistry Introduction any process either caused or accompanied by the passage of an electric current and involving in most cases the transfer of electrons between two substances one a solid and the other a liquid. Under ordinary… …
87Gas chromatography-mass spectrometry — (GC MS) is a method that combines the features of gas liquid chromatography and mass spectrometry to identify different substances within a test sample. Applications of GC MS include drug detection, fire investigation, environmental analysis,… …
88Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
89Tay-Sachs disease — Infobox Disease Name = Tay Sachs disease Caption = DiseasesDB = 12916 ICD10 = ICD10|E|75|0|e|70 ICD9 = ICD9|330.1 ICDO = OMIM = 272800 OMIM mult = OMIM2|272750 MedlinePlus = 001417 eMedicineSubj = ped eMedicineTopic = 3016 MeshID = D013661 Tay… …
90Time from NPL — Map showing the location of the Anthorn VLF transmitter within Cumbria …
