Cathode Ray Tube
Accession Number: 2009.ph.136
Crookes Maltese Cross Cathode Ray Tube. A glass tapering cylinder (shaped like a ear on its side) on a turned wood base with Maltese cross-shaped electrodes mounted in glass projections. The Maltese cross electrode is hinged.
Alternative Name: Crookes Tube with Maltese Cross
Primary Materials: Wood, Metal, Glass
Markings: Old inventory number = phy27.
Height = 26.5, Width = 12.5, Length = 32.5
For Demonstrating physicality of cathode rays. Hinged maltese cross is illuminated, casting a shadow behind it. When the tube is shaken, the cross falls, and the previously shadowed area is illuminated, though somewhat brighter than the surrounding area.
Associated Instruments: Crookes Tubes (Various)
Date of Manufacture: