Accession No

2019

Brief Description

Crookes-type vacuum tube, 1875–1925

Origin

Maker

Class

physics

Earliest Date

1875

Latest Date

1925

Inscription Date

Material

glass; metal (brass, white metal); rubber; paper

Dimensions

length 270mm; breadth 100mm; height 155mm

Special Collection

Cavendish collection

Provenance

Transferred from Cavendish Laboratory, University of Cambridge, 1974.

Inscription

Description Notes

Pear-shaped glass chamber with three side arms carrying electrodes (one with white metal concave disc); fourth electrode at apex of chamber. Swan’s-neck evacuation tube with rubber bung. Paper label marked ‘No. 7a’.

Condition fair; complete.

References

Events