Accession Number: 2009.ph.31
A long glass bulb mounted horizontally on a wooden stand by copper wires. Disc shaped electrodes project horizontally from either end, with a short projection at the bulbous end containing an additional electrode.
Alternative Name: Vacuum tube
Primary Materials: Metal, Wood, Glass
Old inventory number = phy61. Labelled on the glass projection is a partly illegible label, reading “Richard Muller-…, 30”.
Height = 30, Width = 7.5, Length = 28; Bulb Diameter = 15
X-Ray Tube likely with an early medical application.
Manufacturer: Richard Muller-Uri (Braunschwieg)
Date of Manufacture: c. 1910
This X-Ray tube was made for classroom demonstrations around 1910 by Richard Müller-Uri, whose company had quickly entered the rapidly growing discharge and x-ray tube market at the beginning of the 20th century. This glass of this example is has a distinctly purplish tint, indicating that it has been well used.