M0015827: Two Geissler tubes with inner glass spiral / M0015828: "Penetrator" x-ray tube introduced in 1896
- Date:
- 1957
- Reference:
- WT/D/1/20/1/141/80
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: M0015827: Two Geissler tubes with inner glass spiral / M0015828: "Penetrator" x-ray tube introduced in 1896. Source: Wellcome Collection.
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