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...s, but analog physical models for studying electrical transients are still in use. ...tance of a full-size line were used to investigate propagation of impulses in lines and to validate theoretical calculations of transmission line propert ...

...[[integrated circuit]]s. Because transistors are the key active components in practically all modern [[electronics]], many people consider them one of th ...(MOSFET), invented by [[Mohamed Atalla]] and [[Dawon Kahng]] at Bell Labs in 1959.<ref name="computerhistory"/><ref name="Lojek"/><ref name="computer hi ...

{{About|the electronic device|experiments in an evacuated pipe|Free fall|the transport system|Pneumatic tube|Blood sampl ...BN|9027248761}}.</ref> is a device that controls [[electric current]] flow in a high [[vacuum]] between [[electrode]]s to which an electric [[voltage|pot ...

...hipyard.jpg|thumb|upright=1.35|US {{sclass|Virginia|submarine|1}} underway in [[Groton, Connecticut]], July&nbsp;2004]] ...ula-class submarine|''Akula''-class submarine]] of the [[Northern Fleet]], in 2008]] ...