A tall cylindrical glass container with an open top. The container is formed out of two tubes, one slightly smaller than the other, connected at the rim and at the base to create a gap of air between the inner and outer tubes.
Accession Number: 2009.ph.137
Primary Materials: Glass
Dimensions (cm): Height = 23, Diameter = 9
An air gap can provide insulation and aid with keeping a substance at a relatively stable temperature.
Excellent: The glass is not broken or chipped.
Manufacturer: Locally made?
Date of Manufacture: 20th Cent.
Department of Physics, University of Toronto
Additional Information and References: