4.2-inch gas x-ray tube
Date: circa 1902
Inventory Number: VT4694
Classification: X-ray Tube
Attributed to: Macalaster-Wiggin Company (fl. 1897 - 1916)
Cultural Region:
Place of Origin:
Dimensions:
17 x 52.1 x 10.7 cm (6 11/16 x 20 1/2 x 4 3/16 in.)
bulb: 10.7 cm (4 3/16 in.)
Description:
X-ray tube with only two electrodes in a non-spherical bulb. Focusing (concave) cathode and thin platinum angled target; sparking charcoal regenerator side tube.
Signedon tube, stamped: Macalaster, Wiggin Co.
FunctionThis is an example of a simple early x-ray tube. The cathode is concave to help focus the electrons on a small area of the angled platinum anticathode, which is the only anode present. The side tube contains a charcoal regenerator to replenish the optimal gas level inside the tube.
ProvenanceFrom the Harvard Medical School.