# Dimensions of vacuum tube

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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)

phinds
Gold Member
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?

Kamil19991
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?

phinds
Gold Member
So what thickness should the glass have in such a size to withstand?

OP have you tried using a parabolic function?

So what thickness should the glass have in such a size to withstand?
How long is a string?

phinds
Mister T