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I Dimensions of vacuum tube

  1. Nov 4, 2017 #1
    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)
  2. jcsd
  3. Nov 4, 2017 #2


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    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?
  4. Nov 4, 2017 #3
    So what thickness should the glass have in such a size to withstand?
  5. Nov 4, 2017 #4


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    I have no idea. I ask AGAIN ... What's your point in asking?
  6. Nov 4, 2017 #5
    Not very constructive advice methinks. How about you take a timeout.

    OP have you tried using a parabolic function?
  7. Nov 5, 2017 #6
    How long is a string?
  8. Nov 5, 2017 #7

    Mister T

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    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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