scientific instrument

Object NameGeissler Tube

Made FromGlass, Metal, Cork

Dateabout 1890-1910

Place Madepossibly Germany; possibly France

TechniqueLampworked

SizeOverall H: 14 cm, W: 3.5 cm, D: 2.2 cm

Accession Number2014.8.42

Curatorial Area(s)

Science and Technology
Modern

Not On View

Physical DescriptionGeissler Tube. Colorless glass, metal, cork; lampworked. Glass tube with two bulbous ends, each containing a metal rod. One end has small pulled glass attachment. Cylindrical tube between ends contains thinner tube manipulated into four loops. Outer tube has short cylindrical vacuum tube sealed with cork stopper. Pink powdery residue adheres to interior of outer tube, particularly in and around vacuum tube.
Provenance

Source Chayette & Cheval - 2014-03-13