Question
Download Solution PDFThe value of atmospheric pressure in bar is _______________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
- Atmospheric pressure, also called barometric pressure, force per unit area exerted by an atmospheric column (that is, the entire body of air above the specified area).
- Atmospheric pressure can be measured with a mercury barometer which indicates the height of a column of mercury that exactly balances the weight of the column of atmosphere over the barometer.
- Atmospheric pressure is also measured using an aneroid barometer.
- Atmospheric pressure is expressed in several different systems of units: millimetres (or inches) of mercury, pounds per square inch (psi), dynes per square centimetre, millibars (mb), standard atmospheres, or kilopascals.
- Standard sea-level pressure, by definition, equals 760 mm (29.92 inches) of mercury, 14.70 pounds per square inch, 1,013.25 × 103 dynes per square centimetre, 1,013.25 millibars, one standard atmosphere, or 1.01325 bar.
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