X-Ray Tube

Physics

Accession Number: 2009.ph.31

Description:

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

Markings:

Old inventory number = phy61. Labelled on the glass projection is a partly illegible label, reading “Richard Muller-…, 30”.

Dimensions (cm):

Height = 30, Width = 7.5, Length = 28; Bulb Diameter = 15

Function:

X-Ray Tube likely with an early medical application.

Condition:

Associated Instruments:

Manufacturer: Richard Muller-Uri (Braunschwieg)

Date of Manufacture: c. 1910

Provenance:

Historical Notes:

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.