Subscribe! Cold cathode – the term applied to the cathodes are not heated externally. Despite the lack of heating, the cathode can continue working during heat up to high temperatures. …
more at: Instructional film explains the basic principles and function of a cathode ray tube (electron beam exciting phosphors), which was then used primarily for oscilloscopes and radar, but later …
Electronics playlist: US Navy Training Film playlist: more at: “Explains wide application of the cathode ray in making instantaneous graphs of the wave form of an electric current.” US Navy …