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What do you mean "... based on"? The athmosperic pressure is "weight of air" and it can be measured. Strikly speaking: "force per unit area exerted against a surface by the weight of air above that surface at any given point" (wikipedia) Ap could be given in force/area units for example lb/sq ft, kg/sq meter etc.

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16y ago

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Which airplane instrument is really just a barometer?

An altimeter is sensitive to atmospheric pressure and can show the altitude of the aircraft based on the change in atmospheric pressure from the aircraft ascending and descending. Likewise, a barometer, is sensitive to atmospheric pressure.


Does gauge pressure include atmospheric pressure?

Yes, gauge pressure includes atmospheric pressure. Gauge pressure is the pressure measured above atmospheric pressure, so it accounts for the atmospheric pressure as a reference point.


What is the difference between gauge pressure and atmospheric pressure?

Gauge pressure is the pressure measured relative to atmospheric pressure, while atmospheric pressure is the pressure exerted by the Earth's atmosphere on a surface. Gauge pressure accounts for atmospheric pressure, while atmospheric pressure is the total pressure exerted by the atmosphere.


What is a sentence with the word atmospheric pressure?

Atmospheric pressure


What is the total pressure gauge pressure plus atmospheric pressure?

Total pressure is equal to the sum of gauge pressure and atmospheric pressure. Atmospheric pressure is always present and contributes to the total pressure measurement.


If the atmospheric pressure is 29.4 inches of mercury what is the corresponding pressure of mercury?

The atmospheric pressure of 29.4 inches of mercury is equivalent to 74.676 millimeters of mercury. This conversion is based on the standard ratio where 1 inch of mercury is equal to 25.4 millimeters of mercury.


Does atmospheric pressure increase with altitude?

No, atmospheric pressure decreases with altitude.


What is the difference between gage pressure and absolute pressure, and how do they affect the measurement of pressure in a system?

Gage pressure is the pressure measured relative to atmospheric pressure, while absolute pressure is the total pressure including atmospheric pressure. Gage pressure only considers the pressure above atmospheric pressure, while absolute pressure includes atmospheric pressure as well. This affects pressure measurements in a system because gage pressure readings will fluctuate with changes in atmospheric pressure, while absolute pressure readings will remain constant regardless of atmospheric pressure changes.


To change from psig to psia you must add what to p.s.i.g?

You must add the atmospheric pressure.


How is the can in the pan of water similar to the mercury barometer?

Both the can in the pan of water and the mercury barometer function based on the principle of atmospheric pressure. In both cases, changes in atmospheric pressure will cause a corresponding change in the level of water or mercury in the device. The height of the water or mercury serves as an indicator of the atmospheric pressure at that moment.


How does the atmospheric pressure at altitudes sea level compare with atmospheric pressure at sea level?

the atmospheric pressure below sea level is highter (novanet)


Is gauge pressure is the sum of true pressure and atmospheric pressure?

No, it is the DIFFERENCE between the true and atmospheric pressures.