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How is vacuum measured?

by deathlucky
Tags: measured, vacuum
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deathlucky
#1
Feb18-09, 09:34 PM
P: 10
just wondering how vacuum is measured in Hg say is i had a 1L bottle and was to suck half the air out how much Hg would that be?

cheers :)
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Nanoath
#2
Feb18-09, 09:50 PM
P: 8
wouldn't it be just Pressure/2 ?
jtbell
#3
Feb18-09, 10:18 PM
Mentor
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P: 11,632
See the Wikipedia articles on the Torr (a.k.a. "mm Hg") and the barometer (paying particular attention to the "mercury barometer."

super6logan
#4
Feb18-09, 11:14 PM
P: 3
How is vacuum measured?

Pressure is measured in Atmospheres or Torres. At sea level on Earth you should experience 1 Atmosphere. An Atmosphere is 760 torres so you cut that in half and you'd have a .5 Atmospheres or 380 torres
andy taylor
#5
Feb19-09, 05:35 AM
P: 12
HI to measure vacuum in hg..that inches of mercury ..thats an old method using a mercury manometer. the simplest andswer is half atmosheric pressure 1000mbar divided by two.


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