X-ray tube combined with a Villard valve.Circa 1900
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: X-ray tube combined with a Villard valve.Circa 1900. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: X-ray tube combined with a Villard valve.Circa 1900. Wellcome Collection. Source: Wellcome Collection.