Definitions [6]
Define thrust.
The force which produces compression is called thrust. Its S.I unit is the newton.
Define the SI unit of pressure.
SI unit of pressure is the pascal (Pa) or Nm−2
One Pascal: When a force of one newton acts normally on an area of one square metre (1 m2) then the pressure acting on the surface acting on the surface is called one Pascal.
Define High pressure
High pressure is an area of the atmosphere where the barometric pressure is higher than its surrounding areas. In this case, the wind from the center of high pressure blows towards the surrounding low-pressure areas.
Define Low pressure.
A low-pressure area is an area in the atmosphere where the pressure is lower than its surrounding areas. In this situation, the wind from the surroundings blows towards the center of low pressure.
Define one atmosphere.
The pressure exerted by this mercury column is considered as the pressure of magnitude ‘one atmosphere’ (1 atm).
Concepts [20]
- Introduction of Fluid
- Variation of Pressure with Depth in a Fluid
- Thrust and Pressure
- Factors Affecting Pressure
- Pressure of liquid
- Pressure Exerted by a Liquid Column
- Law of Liquid Pressure
- Consequences of Liquid Pressure
- Pascal’s Law
- Application of Pascal’s Law
- Hydraulic Machines: Hydraulic Press (Or Bramah Press)
- Atmospheric Pressure
- Consequences of Atmospheric Pressure
- Measurement of Atmospheric Pressure
- Mercury Barometer (Simple Barometer)
- Fortin’s Barometer
- Aneroid Barometer
- Variation of Atmospheric Pressure with Altitude
- Weather Forecast by the Use of Arometer
- Altimeter
