spinthariscopes
/spɪnˈθærɪˌskoʊps/
noun
- Plural of spinthariscope; devices that show radioactive decay by displaying tiny flashes of light on a phosphor screen.
- Modern spinthariscopes use safer materials than the original radium-based ones.
- Collectors of scientific antiques often seek out old spinthariscopes.
- The laboratory had several spinthariscopes for students to observe radiation.