Vacuum Tube

Physics

Accession Number: 2009.ph.204

Description:

A glass tube, spherical, about 9cm in diameter. An elongated 5cm tube projects from the side holding an electrode.

Alternative Name: Cathode Ray Tube, Crooke’s Tube

Primary Materials: Glass, Metal

Markings:

Dimensions (cm): Height = 25, Width = 9.5, Length = 15.5

Function: Electrical demonstrations.

Condition:

Good. A small piece has broken off the electrode and is loose inside the glass globe. Earlier records (2009) describe this item as having a wooden stand, but the stand is missing (2017).

Associated Instruments:

Manufacturer:

Date of Manufacture:

Provenance: Dr. Martin Lee’s Collection

Historical Notes: