Accession No

2055

Brief Description

Andrews type X-ray focus tube, by Cuthbert Andrews, English, 1/4 20th Century

Origin

England

Maker

Cuthbert Andrews

Class

physics

Earliest Date

1900

Latest Date

1925

Inscription Date

Material

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

Dimensions

length 415mm; breadth 160mm; height 220mm

Special Collection

Cavendish collection

Provenance

Transferred from Cavendish Laboratory, University of Cambridge, 1974.

Inscription

‘RELIANCE
Andrews Rapid X Ray Tube
1975
REMADE
BY
CUTHBERT ANDREWS’ (etched onto main chamber)

Description Notes

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

Condition fair; complete.

References

Events