Accession No

1982.1

Brief Description

vacuum tube, 1875–1925

Origin

Maker

Class

physics

Earliest Date

1875

Latest Date

1925

Inscription Date

Material

glass; metal (white metal); paper; wax (sealing wax)

Dimensions

length 258mm; breadth 28mm; maximum diameter 18mm

Special Collection

Cavendish collection

Provenance

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

Inscription

Description Notes

Plucker-type vacuum tube. Two elongated bulbs joined by straight tube. White metal terminals at opposite ends of tube. Short side arm near one end, stopped with sealing wax. Paper label marked ‘N2O4’.

Condition good; complete.

References

Events