The Ferranti valve is a type of valve developed by Messers. Ferranti Education ltd in measuring the charge to mass ratio of an electron. It consists of an anode and two co-axial guard rings. A cathode, a thin wire of tungsten filament, runs through this arrangement. When heated to a particular temperature using an HT electricity supply, an electron is emitted.
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Ferranti — Infobox Defunct Company company name = Ferranti company slogan = fate = Bankrupt broken up successor = GEC Marconi, Matra Marconi Space foundation = 1905 (as Ferranti Ltd) defunct = Bankrupt 1993 location = industry = Electronics Defence key… … Wikipedia
Ferranti Pegasus — A typical Pegasus computer installation, on view at the Science Museum, London … Wikipedia
Ferranti Mercury — The Mercury was an early 1950s commercial computer built by Ferranti. It was the successor to the Ferranti Mark 1, adding a floating point unit for improved performance, and increased reliability by replacing the Williams tube memory with core… … Wikipedia
Mass-to-charge ratio — Charge to Mass ratio SI quantity dimension: M/(I⋅T) SI unit: kg/C other units: Th The mass to charge ratio ratio (m/Q) is a physical quantity that is widely used in the electrodynamics of c … Wikipedia
Pentagrid converter — For other types of frequency converters please, see Frequency converter. The pentagrid converter is a radio receiving valve (vacuum tube) with five grids used as the frequency mixer stage of a superheterodyne radio receiver. Grids of a 12SA7GT… … Wikipedia
History of computing hardware — Computing hardware is a platform for information processing (block diagram) The history of computing hardware is the record of the ongoing effort to make computer hardware faster, cheaper, and capable of storing more data. Computing hardware… … Wikipedia
International Computers and Tabulators — or ICT was formed in 1959 by a merger of the British Tabulating Machine Company (BTM) and Powers Samas. In 1963 it also added the business computer divisions of Ferranti. It exported computers to many countries around the world and went on to… … Wikipedia
Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… … Wikipedia
John Ambrose Fleming — Infobox Scientist name = Sir J. Ambrose Fleming caption = birth name = John Ambrose Fleming birth date = birth date|1849|11|29|mf=y birth place = Lancaster, Lancashire, England death date = death date and age|1945|4|18|1849|11|29|mf=y death place … Wikipedia
Orme Mill, Waterhead — Coordinates: 53°32′53″N 2°04′26″W / 53.5481°N 2.0738°E / 53.5481; 2.0738 … Wikipedia
