Cathode ray tube
Accession Number: 2009.ph.18
A five-mineral fluorescing cathode ray tube or Crookes tube consisting of a par-shaped upright glass bulb mounted above a turned wooden base. Within the bulb, there are five minerals held by glass fingers. At the top and side of the bulb are electrodes contained within cylindrical glass arms.
Alternative Name: Crookes tube
Primary Materials: Wood, Glass, Metal, minerals
Markings: Old inventory number = phy28.
Dimensions (cm): Height = 33, Base Diameter = 13
5 Minerals fluoresce under the bombardment of cathode rays. Possibly used for spectroscopy demonstrations.
Date of Manufacture: