Accession No
1962
Brief Description
glass vacuum tube, 1875–1925
Origin
Maker
Class
physics
Earliest Date
1875
Latest Date
1925
Inscription Date
Material
glass; metal (white metal); paper
Dimensions
length 185mm; breadth 55mm ; thickness 45mm
Special Collection
Cavendish collection
Provenance
Transferred from the Cavendish Laboratory, University of Cambridge, in 1974.
Inscription
Description Notes
Vacuum tube with glass spiral and coil set in bulb between anode and cathode; coil tinged green. One terminal is set in a short side arm.
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:45494
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