This exhibit is an early (possible 1910-20) cold cathode X-Ray tube. There are no markings on the glass to give information.Both cathode and anode are in the form of flat discs. Any X-Rays produced would be scattered and not held in a tight cone, contrast this to the more developed structure here.A closer view of the electrodes. Just visible is the glass tube housing the anode lead. On the left is the copper oxide of the glass to metal seal.In this X-Ray image of the tube the glass tube covering the anode lead is very clear. The evacuation tube is a long swan neck.The balloon envelope is 80 mm in diameter, and including the base pins is 305 mm tall.Reference: Observation. |
Updated March 25, 2019.
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