8
votes
Area unit for mmHg pressure
My physics is a bit rusty, but the equation for pressure of a liquid is
p = ρgh
where rho is the density, g is the local gravity and h is the height of the column of liquid. As you can see from this ...
- 6,901
5
votes
Area unit for mmHg pressure
As per Narusan's answer, it's an artifact of the method of measurement from using a column of mercury in a curved vacuum tube.
Equivalent of 7.50062 mm of mercury is 1 kPa, or 0.150 psi or 10 ...
- 512
3
votes
Area unit for mmHg pressure
Consider a liquid of density ρ and volume V, its weight on the ground is:
p = ρ V
If this volume of liquid is a column of constant cross-section s over a height h, then:
p = ρ h s
The pressure this ...
- 133
3
votes
Area unit for mmHg pressure
When looked at dimensionally, "mmHg" as a pressure measurement is "cubic millimeters of mercury per square millimeter". Basic dimensional analysis says that you can cancel your ...
- 2,056
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