coils Heater Cathode Electron beam Focusing coil Fluorescent screen Grille de contrôle Anode Bobine de déviation Réchauffeur de cathodeCathode Faisceaux
coils Heater Cathode Electron beam Focusing coil Fluorescent screen Grille de contrôle Anode Bobine de déviation Réchauffeur de cathodeCathode Faisceaux
(SEM) compared to an optical transmission microscope and a cathode ray tube (CRT) TV screen - both systems have many things on common with the electron
symbol labeled.svg English: Schematic circuit symbol for a pentode vacuum tube. (F) filament or heater, (C) cathode, (G) control grid, (S) screen grid, (U)