X-ray of an electron demonstration tube from the early 1900s. High voltage is applied to the top and bottom contacts. This type of tube led to the development of x-ray technology | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Kinsman, Edward |
Taille de l’image : | 4800 px × 6000 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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