X-Ray Tube

Production date
1898
Country
Germany
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Object detail

Description
The x-ray tubes consist of blown glass tube with anode, anticathode and focus cathode. Electrodes are connected to soldered terminals by wires.
Classification
CH classification MEDICINE Medicine x-ray equipment
Maker
Production date
1898
Production place
Measurements
H355 x W410 x D180 mm
Media/Materials description
Glass, metal, wood
Signature/Marks
ORIGINAL MÜLLER NÖNTGENROHR No. / 110095
History and use
This is an extremely rare and fine example of early x-ray technology. The cathode x-ray tube was amongst the first radiological equipment developed.

The cathode, being concave, focuses an electron beam to a small spot on the anticathode, where they are absorbed. This excites atoms in the anticathode, which relax by emitting X-ray photons. X-rays emerge from the side of the tube and since they emanate from a small spot on the anticathode, X-ray images are sharp. The glass becomes discoloured due to radiation damage or metal deposits.

Uploaded to the Web 27 May 2011.
Registration number
H22579

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