Accession No

2072

Brief Description

vacuum tube, helium, by Cavendish Laboratory technician Ebeneezer Everett, English, 1908

Origin

England; Cambridge

Maker

Everett, Ebeneezer

Class

physics

Earliest Date

1908

Latest Date

1908

Inscription Date

1908

Material

glass; metal (white metal, brass); inorganic (charcoal); cloth (cotton wool); paper

Dimensions

length 335mm; breadth 400mm; depth 125mm

Special Collection

Cavendish collection

Provenance

Transferred from Cavendish Laboratory, University of Cambridge, 1974.

Inscription

Helium EE Feb [190?]8

Description Notes

Experimental/demonstration vacuum tube, helium, by Cavendish Laboratory technician Ebeneezer Everett, 1908.

Glass chamber with long arm carrying white metal rod topped by target consisting of two parallel triangular plates. Side arm with second electrode ending in white metal disc. Target arm has side arm for evacuation tube with carbon chip regulator. Brass caps on electrode arms to aid electrical connection. Paper label with MS note ‘Helium EE Feb [190?]8’.

Condition good; complete.

Orange paper label caution note, found in box with this object, 2005, 2055 and 2980. Unclear which object it belongs to.

References

Events