Accession No
4498
Brief Description
didactic model of an electron gun in presentation case, from the University of Cambridge Engineering Department, English, mid-20th Century
Origin
England
Maker
Class
electrical
Earliest Date
1950
Latest Date
1975
Inscription Date
Material
wood; glass; metal (brass, copper, aluminium); rope (string); paper; plastic; ceramic
Dimensions
height 340mm; breadth 180mm; depth 70mm
Special Collection
Provenance
Donated by the Department of Engineering, University of Cambridge.
Inscription
‘GR’ (pencilled on instrument)
‘512 04’ (pencilled on instrument)
Description Notes
didactic model of an electron gun in presentation case, from the University of Cambridge Engineering Department, English, mid C20th.
Wooden box with glazed front and brass hanging bracket. White-painted interior. Contains annotated exposed model of an electron gun consisting of a series of rods, plastic discs and plates, metal plates and a glass tube; various wires. Annotations are handwritten in ink on raised pieces of wood, glued to base and covered with paper: ‘X PLATES’, ‘SCREEN’, ‘Y PLATES’, ‘3RD ANODE’, ‘2ND ANODE’, ‘GETTERS’, ‘1ST ANODE’, ‘CONTROL ELECTRODE’, ‘CATHODE’.
References
Events
Description
This didactic model of an electron gun was acquired from the University of Cambridge’s Department of Engineering. It is composed of an annotated and exposed specimen with labelled parts, inside a presentation case.
Electron guns produce a narrow, collimated electron beam that has a precise kinetic energy. Their main use was in cathode ray tubes (CRTs), used in older television sets, computer displays, and oscilloscopes.
20/10/2014
Created by: Joshua Nall on 20/10/2014
FM:40547
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