Accession No

1987.1

Brief Description

vacuum tube, 1930

Origin

Maker

Class

physics

Earliest Date

1930

Latest Date

1930

Inscription Date

13-2-1930

Material

glass; metal (white metal, copper); paper

Dimensions

length 217mm; breadth 92mm; depth 20mm

Special Collection

Cavendish collection

Provenance

Transferred from the Cavendish Laboratory, University of Cambridge, in 1974.

Inscription

‘Helium
No 3
Feb 13/30’ (paper label)

Description Notes

Vacuum tube with constriction near one end. Two side-arms, one for the evacuation tube, the other carrying one of the terminals. Copper and white metal terminals.

Condition good; complete.

References

Events