spectrum tube
Date1890-1920
Inventory Number4855
ClassificationDischarge Tube
Subject
Maker
American
?
Owner
Theodore William Richards
1868 - 1928
Cultural Region
Place of Use
Dimensions3.2 x 24.7 x 3.2 cm (1 1/4 x 9 3/4 x 1 1/4 in.)
Material
DescriptionGlass spectrum tube consisting of two larger tubes connected by a thinner capillary tube. Each end contains a sealed electrode in the shape of a needle as well as a small, closed, irregularly shaped side tube.
The tubes are darkened by use near the electrodes.
The tubes are darkened by use near the electrodes.
Signedunsigned
Inscribedpaper label: C No. 9
FunctionThis tube produces a characteristic light (spectrum) of the gas contained inside (unknown) when its electrodes are connected to a voltage source. Useful for research and calibration in spectroscopy.
ProvenanceFrom the Department of Chemistry, Professor T. W. Richards, Harvard University.
