Accession No

2003

Brief Description

vacuum tube, 1900-1950

Origin

Maker

Class

physics

Earliest Date

1900

Latest Date

1950

Inscription Date

Material

glass; metal (white metal, brass)

Dimensions

length 370mm; maximum diameter 105mm

Special Collection

Cavendish collection

Provenance

Transferred from Cavendish Laboratory, University of Cambridge, 1974.

Inscription

‘D.R.G.M. 331293
No. 37.’ (etched into glass)

Description Notes

Vacuum tube consisting of large spherical bulb and cylindrical tube. Long white metal electrodes which almost touch in the centre; brass cups to aid electrical contact. Short side-arm evacuation tube.

Condition good; complete.

References

Events