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There are two types of atm pressure: static and dynamic. Static atm pressure stems solely from amount of air piled above the pressure point where the pressure is measured. We typically measure that at ground level; so the pressure is based on the weight of all the air above the ground.
Dynamic air pressure is based in part on the static air pressure but as modified by the flow of the air above the pressure point where it's measured. A gent named Bernoulli found that the static air pressure is reduced by a predictable amount depending on air velocity when the air flows over the pressure point.
And that's the answer. The static air pressure is reduced by air flow over the pressure point. In fact the amount of reduction is proportional to the velocity of the air flow over the pressure point.
What else can I help you with?
The red liquid level of the manometer on laminar airflow indicates what?
The red liquid level of the manometer on laminar airflow indicates the pressure difference between the two points of the airflow system being measured. This pressure difference helps determine the flow rate of the airflow.
Is the relationship between pressure and volume direct or inverse?
the relationship between pressure and volume a direct or inverse?
What is relationship between pressure and force?
Pressure = Force/Area
What is the mathematical relationship between force pressure and are?
Pressure = Force/Area.
What is the relationship between volume and pressure in a closed system?
In a closed system, the relationship between volume and pressure is described by Boyle's Law, which states that as the volume of a gas decreases, the pressure of the gas increases, and vice versa. This means that there is an inverse relationship between volume and pressure in a closed system.
What relationship does boyle's law describe?
The relationship between pressure and volume (apex)
What is an orifice meter?
A device for measuring the flow of a liquid.
What is the relationship between pressure and volume in a water pressure-volume diagram?
In a water pressure-volume diagram, the relationship between pressure and volume is inversely proportional. This means that as the volume of water decreases, the pressure increases, and vice versa.
What is the relationship between pressure and flow rate in a system, as described by the pressure vs flow rate equation?
In a system, the relationship between pressure and flow rate is described by the pressure vs flow rate equation. This equation shows that as pressure increases, flow rate decreases, and vice versa. This means that there is an inverse relationship between pressure and flow rate in a system.
What is relationship between fluid density and pressure?
The relationship between fluid density and pressure can be described by the hydrostatic equation, which states that pressure in a fluid increases with increasing fluid density. This relationship is important in understanding how pressure changes with depth in a fluid column, such as in the ocean or in a container.
What does the pressure vs temperature graph reveal about the relationship between pressure and temperature in the system?
The pressure vs temperature graph shows that there is a direct relationship between pressure and temperature in the system. As temperature increases, pressure also increases, and vice versa. This relationship is known as the ideal gas law.
What is the relationship between elevation and air pressure?
the sky
