Accession No

2243

Brief Description

Gassiott vacuum tube, by Casella, English, c. 1875 - 1925

Origin

England; London

Maker

Casella

Class

physics

Earliest Date

1875

Latest Date

1925

Inscription Date

Material

glass; metal (white metal, brass, steel); wood; cloth (velvet)

Dimensions

tube length 1030mm; maximum diameter 30mm;box length 1100mm; breadth 85mm; height 85mm

Special Collection

Cavendish collection

Provenance

Transferred from Cavendish Laboratory, University of Cambridge, 03/1974.

Inscription

‘Gassiot’s Vacuum Tube.
No. 28 Casella fecit London ‘ (painted at one end)

Description Notes

Long glass tube, with small narrow sections at the two ends. Close to each end of the main section are 2 white metal hook-shaped terminals leading to metal wires inside the tube. The glass near the terminals appears silvered. In fitted wooden box with brass hinges, hook fasteners and lock, lined with purple velvet.

Condition good (box fair); complete

References

Events