Accession No

2056.3

Brief Description

light anode type X-ray focus tube, by Cox, English, 1/4 20th Century

Origin

England; London

Maker

Cox

Class

physics

Earliest Date

1900

Latest Date

1925

Inscription Date

Material

glass; metal (at least two white metals, copper); rubber; paper

Dimensions

length 355mm; breadth 155mm; depth 140mm

Special Collection

Cavendish collection

Provenance

Transferred from Cavendish Laboratory, University of Cambridge, 1974.

Inscription

‘Cox’s Record
NO 54105’ (etched into glass of main chamber)
‘COX’S RECORD TUBE
No 2884
MANUFACTURERS OF
X RAY APPARATUS,
1A ROSEBERY AVENUE,
15–21 Laystall St.,
E.C.’ (paper label on cathode tube)

Description Notes

Glass tube with central spherical chamber, tinged purple from gas. White metal rod anode in arm. Opposing long tube with side arm containing white metal cathode ending in concave disc. Side arm with connection for the target, which consists of a white metal disc. White metal caps on electrodes to aid electrical connection; spiral metal wire connects anode and target.

Condition good; complete.

References

Events