Vacuum tubes were once commonly used in electronic devices to amplify a signal. Resembling light bulbs with a filament sealed in a glass envelope evacuated of all air,vacuum tubes work via thermionic emission. The filament releases electrons into the vacuum that are then drawn into the metal plate (anode),resulting in a current of electrons flowing from filament to plate | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Winters, Charles D. |
Bildgröße: | 2550 px × 3837 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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