Accession No
1957
Brief Description
vacuum tube with whelk shell target, 1900–1950
Origin
Maker
Class
physics
Earliest Date
1900
Latest Date
1950
Inscription Date
Material
glass; metal (white metal); organic (shell)
Dimensions
length 181mm; breadth 67mm; maximum diameter 20mm
Special Collection
Cavendish collection
Provenance
Transferred from the Cavendish Laboratory, University of Cambridge, in 1974.
Inscription
Description Notes
Vacuum tube with long evacuation tube. Side arm with white metal anode. Disc cathode. Target supplied by large whelk shell (free to move within the tube).
Condition good; complete.
References
Events
Description
Vacuum tubes contain one or a combination of the following: rarefied (thinned) gasses such as neon or argon, conductive liquids or minerals. When an electrical charge is passed through the tube different effects are created.
FM:44980
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