Cathode ray tube with one mineral


Accession Number:


A black turned wooden base with a 19cm glass tube vertically mounting on top of the wooden base. On the lower part of the glass tube there is a 2cm projection which contains the electrode. Inside the glass tube there is a greenish mineral which is supported by an inner glass arm, 1/3 of the distance from the bottom of the tube. On the top of the glass tube there is a disc shaped electrode.

Alternative Name: Crookes Tube with one mineral

Primary Materials: Wood, Metal, Glass

Markings: Old inventory number = phy75.

Dimensions (cm): Height = 25.5, Length = 9, Width = 8


A mineral fluoresces under bombardment of cathode rays. Possibly used for spectroscopy.


Associated Instruments:


Date of Manufacture:

Provenance: Collection of Dr. Martin Lee.

Historical Notes: