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Any pushing force measured per unit area is termed as pressure. So the force may be the weight of a column of liquid or gas. Or the change in momentum of impinging particles per unit time on the plane. This will be equally balanced by the pressure exerted by the column of Mercury. Hence the pressure is given in the familiar unit of height of mercury such as 760 mm of mercury(Hg) for normal atmospheric pressure.
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The SI unit for pressure is pascal (N/m2), with the symbol Pa.
1 Pa = 10e-5 bar = 1,0197.10e-5 at; 1 mmHg has 133,322387415 pascals.
Wiki User
∙ 7y ago
Wiki User
∙ 13y agoWith a thing called a barometer. In its original form, still used for scientific purposes, it is a U shaped glass tube, closed on one side, and filled with mercury. The air pressure shifts the mercury level. Sure they have an explanation on wikipedia.
Wiki User
∙ 8y agoA barometer measures air pressure
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Air moves from a point at which air pressure is to a point at which air pressure is?
Air moves from a point at which air preasure is high to a point which air preasure is low
What are six weather variables?
wind,tempeture,direction,air preasure,cloud cover,and precipitation
What weather instrument measures air pressure?
A barometer measures air pressure.
Why does the air over the land move towards sea?
high preasure over the water leading to land in the opposite dirrection but not always.
Why does the air over the sea land move towards the sea?
high preasure over the water leading to land in the opposite dirrection but not always.
Air moves from a point at which air pressure is to a point at which air pressure is?
Air moves from a point at which air preasure is high to a point which air preasure is low
What is air preasure?
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How does an open tube manometer work?
it measures the difference in preasure one arm of the tube is opened and the other is attched with a vessel like structure which help to measure the preasure the difference in liquid level represents ' the difference in preasure
Who invented the bourdon tube?
Eugene Bourdon 1849 France measures the preasure of liquids and gasses
Where is the air conditioner filter?
It is on outlet of the High preasure side
Where is air conditionEr filter?
It is on outlet of the High preasure side
What causes air preasure?
It is caused by the pull of the Earth's gravity on the molecules.
The weight of the earth's atmosphere pressing in all directions?
Air preasure
What does Barometric Pressure tell us?
tell us the air preasure
Does a barometer measures air?
It measures air pressure not air.
Are the most important properties of an air mass its temperature and amount of water vapor?
no it is not its preasure
What are you measuring when you measure air preasure?
The difference in pressure between absolute and gauge pressure.
