Atmospheric pressure refers to the force per unit area exerted against a surface by the weight of air above that surface in the Earth's atmosphere. The standard atmosphere (symbol: atm) is a unit of pressure at sea level and is equal to 101325 Pascal.
101.3kpa
Isobars - Measure atmospheric pressure Isotherms - Measure temperature Isoheights - Measure elevation
I think you could be referring to a barometer, which measures atmospheric pressure and is an indicator of when it will rain or shine.
Pressure is often measure in units of force per area. In the standard system of units, the SI, that would be Newton / meter2 - this unit is also called Pascal. Other commonly used units are bar (equal 100,000 Pascal), and atmosphere (the atmospheric pressure under standard conditions - close to one bar).
Newtons / square meter. This unit has the special name Pascal.
The force of colliding particles
A barometer is an instrument used to measure the atmospheric pressure. It does so by comparing the atmospheric pressure with a predefined standard pressure.
It is an definition by the international organization. When the temperature is 15 centigrade degree. To measure the atmospheric pressure is 1013.25 hundred pascals.
A barometer is used to measure atmospheric pressure. It can also measure altitude!
In weather maps, atmospheric pressure is measured in millibars. Standard atmospheric pressure is 1013.2 millibars at sea level. Air pressure varies depending on temperature and air density.
A barometer is used to measure atmospheric pressure. It can also measure altitude!
A barometer is used to measure atmospheric pressure. It can also measure altitude!
It measure the Atmospheric Pressure.
It is a measurement of pressure
to measure atmospheric pressure
Atmospheric pressure
Usually the instrument used is called a barometer- which could be a closed end manometer or an aneroid barometer.An altimeter actually also measures atmospheric pressures - but for a different purpose.
A barometer is used to measure atmospheric pressure. It can also measure altitude!