What Are the Best Dimensions and Materials for High Vacuum Transparent Tubes?

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SUMMARY

The discussion centers on determining the optimal dimensions and materials for constructing high vacuum transparent tubes, specifically with a diameter of 30 cm and a length of 1-1.5 m, aiming for a vacuum level of 0.2-2 Pa. Participants debate the theoretical limits of tube thickness, emphasizing that thicker glass can be used as dimensions increase. The conversation highlights the importance of understanding the structural integrity required for such applications, particularly in high vacuum environments.

PREREQUISITES
  • Understanding of high vacuum technology and its requirements
  • Knowledge of material properties, specifically glass strength and thickness
  • Familiarity with vacuum measurement units, particularly Pascal (Pa)
  • Basic principles of structural engineering related to pressure differentials
NEXT STEPS
  • Research the mechanical properties of borosilicate glass for vacuum applications
  • Explore design guidelines for high vacuum systems, including tube dimensions
  • Learn about vacuum sealing techniques and materials
  • Investigate the effects of pressure differentials on material selection and design
USEFUL FOR

Engineers, physicists, and researchers involved in vacuum technology, material science, and experimental design will benefit from this discussion.

Kamil19991
Hello
For the purpose of the experiment, I wonder what the maximum dimensions can have a transparent tube, I thought over a diameter of 30cm and a length of 1-1,5m and from what material should such a pipe be made. I would like to get a high vacuum (about 0,2-2Pa)
 
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Kamil19991 said:
Hello
For the purpose of the experiment, I wonder what the maximum dimensions can have a transparent tube, I thought over a diameter of 30cm and a length of 1-1,5m and from what material should such a pipe be made. I would like to get a high vacuum (about 0,2-2Pa)
I don't see how you can specify a theoretical limit since you could just make thicker and thicker glass tubes as the size goes up. What's your point in asking?
 
phinds said:
I don't see how you can specify a theoretical limit since you could just make thicker and thicker glass tubes as the size goes up. What's your point in asking?
So what thickness should the glass have in such a size to withstand?
 
Kamil19991 said:
So what thickness should the glass have in such a size to withstand?
I have no idea. I ask AGAIN ... What's your point in asking?
 
phinds said:
I have no idea. I ask AGAIN ... What's your point in asking?

Not very constructive advice methinks. How about you take a timeout.

OP have you tried using a parabolic function?
 
Kamil19991 said:
So what thickness should the glass have in such a size to withstand?
How long is a string?
 
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Kuzon said:
Not very constructive advice methinks.

Trying to find out why someone is asking a question can in fact be the most constructive approach, in my experience. Often the questioner doesn't have a well-formed question, and so attempting to answer it is not very constructive.
 
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