Recent content by hubajs

Thank you everyone for your answers. This topic can be closed.

Thank you for answers, I have one last question for finalizing my reflection. Note: Mercury evaporation will take some time and vacuum presure degrades within minutes or hours (so I ignore). Please, the folowing question is for my better vacuum understanding. I really appreciate your time you...

Thank you! In case I am on the good way: What is the magnitude of usual real pressure that can be acquired during the Torricelli test with mercury when we use nice clean tube and a clean mercury? 10 Pa 1.0 Pa 0.1 Pa 0.01 Pa 0.001 Pa less ? Note: Something is here, but not figured out usual...

Nature of the "impurity" will not be important. I just need to know the theory limit of vacuum pressure I have to take into account in my calculations. I prefer to stay within the theory frame and not enter to the real world for now. My further application lowest pressure I wish to reach...

what is "svp" and "PV"?

I need theoretical advice on Torricellian vacuum pressure and tube length relation to vacuum pressure (see the new image here). What happen when I use 10000mm long tube? Will the h2=8240mm? Is the Torricellian vacuum pressure p = 0 Pa for 1000 mm long tube? Is the Torricellian vacuum pressure p...

OK, lets, see. I am the most interested by theoretical explanation where I assume p1 = p3 = 0Pa for all heights which is quite weired to me. Please everyone, let's stay within Newton's world, no quantum physics. :-)

@256bits my bad, p1=101,325kPa is copy paste error. The question was meant to be this: Theoretical question: When pressure p1=0Pa. Is also the p3=0Pa? Assumption: 1) reality: vacuum presure "p" can be within an order 0Pa < p < 3.325Pa (for -98Pa underpressure from 101,325kPa) 2) theory: vacuum...

Ah I understood your "Jupiter" comment now! Thank you, I clarify: By the column height I mean the "H1" and "H2" in the new image here below. I am interested by "H1" and "H2" difference impact to the vacuum "p1" and "p3" difference. Theoretical question: When pressure p1=101,1325Pa. Is also the...

OK, no problem. I like rules that avoid members to waste time with useless topics.

This is not a question about how to engineer a structure (thats why I use the word "theoreticaly"). But OK, let's modify: "So theoreticaly is also 0Pa at 10m of the test column height?"

Hello, I am master in energy engineering and I can design a powerplant, working experience since 19 years. Neverthless, it can happen, that I need a help in physics basics with questions that I have been never thinking about. I can help with energy conversion clarification, combustion...

Does the real vacuum pressure/underpressure depends only on the amount of impurities? In the case of theoretical Torricelli vacuum test, when no purities left in the vacuum: Is the vacuum 0Pa at 1m height (with 760mm of Hg) and also the same at 10m height (also with 760mm of Hg) of the test...