Identify this piece of equipment?

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  • Thread starter Thread starter NatFex
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SUMMARY

The discussion centers on identifying a specific piece of equipment, identified as a "teltron tube," which is a type of cathode ray tube. Participants suggest its use in educational demonstrations, particularly for illustrating the Lorentz force and Coulomb force using Helmholtz coils or electrostatically charged plates. The internal structure of the teltron tube differs from standard dual beam tubes, leading to confusion in identification. The tube is recognized for its application in experiments related to measuring electron charge, akin to a revised Millikan experiment.

PREREQUISITES
  • Understanding of cathode ray tubes and their applications
  • Familiarity with the Lorentz force and Coulomb force concepts
  • Knowledge of thermionic emission and its educational uses
  • Basic principles of ionization and gas behavior in vacuum tubes
NEXT STEPS
  • Research the principles of operation of teltron tubes
  • Explore the applications of Helmholtz coils in physics demonstrations
  • Study the historical context and methodology of the Millikan oil drop experiment
  • Investigate the various types and configurations of cathode ray tubes
USEFUL FOR

Physics educators, laboratory technicians, and students interested in experimental physics and the practical applications of cathode ray technology.

NatFex
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We were digging through some of the apparatus today and amongst a few dual beam tubes we found this, pictured below

2eqf0yf.jpg


Here's another one up close:
28cpkr7.jpg

It's very similar looking to a dual beam tube shape-wise but as you can see the internal structure is quite different. What is this? After looking at it for a while we suspect it might have to do with measuring the charge of an electron (a sort of revised Millikan experiment?) but we can't really tell

I've tried searching it up but as you can imagine I had a hard time describing it to a search engine without really knowing what it is, so that wasn't too useful.

Can anyone shed light on this? Thanks
 
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Similar to a cathode ray tube.
I can not find that exact design but it seems they come in many different shapes, sizes and configurations.
cold cathode ray tube of sort.
 
Last edited:
I can imagine it sitting between pairs of Helmholtz coils as a demonstration of the Lorentz force or between electrostatically charged plates to demonstrate the Coulomb force or some combination, particularly if the gas in the tube glows when ionised.
 
It is a demonstration thermionic diode used in education.
 

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