Ok, here we go. For anyone just tuning in, there are two conversations right now, one about rockets and newtons laws and one about spacesuits and pressure. There were a few more from before if Jack ever has a chance to continue them. This post will be about the
spacesuits and pressure, and I'm going to start by reviewing the conversation a bit for those who might find it useful.
@Mark Antony, in my last big post I showed evidence that joints have always existed to allow bodily movements in spacesuits, but you still made the claim that "a pressure differential of 5-6psi would still render the suit impractically rigid". I will focus on this thesis of yours.
There are various other claims you have made, such as that "you would have an unusual chemical reaction as the protons strip the materials apart to create a more stable state" which even when asked about you did not further support with evidence. There are a bunch of unsupported claims. I will leave most of these other claims for which you did not provide supporting evidence for alone, but if you feel I'm missing anything essential please let me know.
I'll start where you are correct: you said that the vacuum of "space" has never been recreated on Earth. You are correct that we have never invented a vacuum chamber that recreates the level of vacuum found in space, although we do have ultra-high vacuum chambers. I agree with you that this would be an interesting experiment to take back some "space" from a space expedition. However, mathematically we can already predict what it would be like.
I've read through the conversation a couple of times now to try to understand your views as best I can. I think the highlight of your argument for all of us was the giant syringe example. It's pretty clear that your view is based on a sincere misunderstanding of the physics of pressure. And as any good scientist should do, I hope you can take a moment to critically analyze your thesis with an open mind. I'll give you both a mathematical and experimental approach with your syringe example.
First, the math. The fact that ultra high vacuums have extremely high negative exponents of pressures means that they are extremely close to zero pressure, i.e. the differences become negligible. If the pressure inside the spacesuit is 1atm (not sure what it really is, just a thought experiment) and you are in a ultra high vacuum chamber, the pressure outside the spacesuit is 9.87×10^−16 atm. So the final pressure differential is 0.999999999 ... and so on. When you now take it into space, the pressure inside the spacesuit is the same, but the pressure outside is now approx. 2.96×10^−20, so the final pressure differential is also 0.999999999 ... and so on, but negligibly larger. The only difference is that it is ever so slightly closer to 1atm in the case of being in space.
Now, maybe this math is problematic to you because you interpret the laws of physics differently. So let's take your syringe example, which is extremely helpful, for an experimental approach. You were mentioning how pulling the 20-mile syringe would require an exponentially greater force with distance. The
exponential part is central and crucial to your thesis that the vacuum of space is so powerful we cannot comprehend it. I don't think you have any experimental evidence to support that claim, so let's test it. Modern science would predict that the force required to keep pulling the syringe would rise, but
asymptotically, not exponentially. This means that while the force required to pull does increase over distance as you are pulling, the derivative of the function (Δforce required to pull)/distance is positive but trends towards zero. At a certain point the force will be very high, but the delta of (force over distance) will become negligible. Eventually, you will stop noticing the change in force as you are pulling. It will be a
seemingly constant large force. The change in force as you are pulling will become unnoticeable to your senses or even measurement. If your tank can already surpass that force, you can keep going forever (in an ideal system). But because this is a rule, it can be tested with a normal-sized syringe.
If you are correct here, your findings would be groundbreaking. You would be making the greatest scientific discovery in hundreds of years. So you have no excuse not run the experiment
You can purchase a syringe for 9 bucks here
https://www.amazon.com/Frienda-Scientific-Dispensing-Multiple-Measuring/dp/B07MHMN3Y8/ref=sr_1_4?dchild=1&keywords=scientific+syringe&qid=1606773922&sr=8-4 , a spring scale for 13 bucks here
https://www.amazon.com/Ajax-Scientific-Plastic-Tubular-Capacity/dp/B00EPQGQIA/ref=sr_1_2?dchild=1&keywords=scientific+pull+scale&qid=1606773980&sr=8-2, and you will need a ruler. Plug the syringe at the bottom with something, then pull it and measure the pulling force at regular intervals. Your hypothesis is it will rise exponentially, mine (and the rest of the scientific community) is that it will rise asymptotically. If you prove me wrong, you may have shocking news regarding a basic physics principle (Boyles Law). I'll buy the tools myself and verify your result if you prove me wrong.
*** (its also possible I've made a major blunder, because again, I'm not a physics guy, but maybe one or two other people can back me up on this?)