Explanation:
There are three methods of measuring pressure. These are absolute pressure, gauge pressure and differential pressure.
Pressure is the defined as the force acting per unit area of a surface. The higher the force and the lower the area, the more the pressure on such a surface.
- The different modes of measuring pressure highlights the references used in estimating pressure values.
- Absolute pressure is measured in a vacuum. It is the pressure in an air free empty space typically of a vacuum. The reference is the pressure in the absolute vacuum.
- Gauge pressure is the atmospheric pressure that acts upon the reference which is the gauge and the exerted pressure.
- Differential pressure is like the gauge pressure but it differs in that the atmospheric pressure is not the reference. Another pressure reference point is used in the medium.
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atmospheric pressure https://brainly.com/question/9559426
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