Cathode ray tube with one mineral
Accession Number: 2009.ph.214
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.
Date of Manufacture:
Provenance: Collection of Dr. Martin Lee.