Engraving depicting a regenerative x-ray tube, which by two lightbulbs, allowed a more efficient vacuum to be created. Dated 19th Century

---

Size: 2610px × 8036px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -ray, 19th, archival, archive, century, electric, electricity, engraved, engraving, historical, history, illustrated, illustration, light, lightbulb, lightbulbs, physics, regenerative, science, tube, vacuum