The pressure Air normal is 1.013 x 10 5 Pa or 101.3 kPa.

The atmospheric pressure decreases as you rise in altitude.

Normal atmospheric pressure supports a column of mercury 760 mm high, this is expressed by 760 mm Hg or 760 torr. A barometer used to measure atmospheric pressure.

The atmospheric pressure in the calculation of pumping network Indeed when reservoirs are open to air pressure..

This pressure does not take into account the hydrostatic but is dependent on temperature and the altitude .

Altitude is a parameter to include in the tab system of pumps and turbines,

value of ambient pressure is thus proposed according to the temperature

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