Accession No
1964
Brief Description
vacuum tube, 1900–1950
Origin
Maker
Class
physics
Earliest Date
1900
Latest Date
1950
Inscription Date
Material
glass; metal (white metal, brass)
Dimensions
length 235mm; breadth 42mm; depth 42mm
Special Collection
Cavendish collection
Provenance
Transferred from the Cavendish Laboratory, University of Cambridge, in 1974.
Inscription
Description Notes
Vacuum tube with two spherical reservoirs on each side of a central coil filled with green fluid. White metal terminals with brass caps (very corroded) to aid electrical contact.
Condition poor (much corrosion); complete.
Verdigris present on metal terminals.
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:44975
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