Accession No

2374

Brief Description

vacuum tube for radiation experiments, 1875-1900

Origin

Maker

Class

physics

Earliest Date

1875

Latest Date

1900

Inscription Date

Material

glass; metal (white metal); graphite; wax

Dimensions

length 229mm; maximum diameter 55mm

Special Collection

Provenance

Inscription

Description Notes

Glass cylindrical tube with pear-shaped bulb near one end. Two white metal electrodes; one has wire connected to length of metal foil which holds a piece of graphite at the end; the other has wire connected to length of metal foil which ends in a black-painted circle set within the bulb.

Condition fair; complete.

References

Events