Cathode Ray Tube


Accession Number:

Instrument Name: Cathode Ray Tube


A four-mineral fluorescing cathode ray tube. A black turned wooden base with a metal plate attached to the bottom and a glass tube, approximately 27cm in length, with 2.5cm projection from the side, mounted on top. A projecting glass tube contains the base of a metal ring which extends around the inside wall of the main glass tube. On the top of the main glass tube there is an electrode. Four different minerals are supported on small glass arms in the centre of the main glass tube.

Alternative Name: Crookes Tube with Four Minerals

Primary Materials: Wood, Metal, Glass

Markings: Old Inventory Number = phy78.

Dimensions (cm): Height = 33 cm, Diameter = 7.5 cm


Minerals are fluoresced under the bombardment of cathode rays. Possibly used for spectroscopy.


Associated Instruments:


Date of Manufacture:

Provenance: Collection of Dr. Martin Lee.

Donated to UTSIC: No

Historical Notes: