A miniature cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, the beams of which are manipulated to display images on a phosphorescent screen. From Illustrated News. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Universal Images Group / Universal History Archive |
Bildgröße: | 6266 px × 3347 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |