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प्रश्न
Draw a simple labelled diagram of a Fortin barometer and state how it is used to measure the atmospheric pressure.
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उत्तर
To measure the atmospheric pressure, first the leather cup is raised up or lowered down with the help of the screw S so that the ivory pointer I just touches the mercury level in the glass vessel. The position of the mercury level in the barometer tube is noted with the help of main scale and the vernier scale. The sum of the vernier scale reading to the main scale reading gives the barometric height.
संबंधित प्रश्न
What do you understand by atmospheric pressure?
We do not feel uneasy even under enormous pressure of the atmosphere above as well as around us. Give a reason.
State two uses of a barometer.
Give two reasons why water is not a suitable barometric liquid.
Briefly explain the three chief types of winds.
Draw a simple diagram of a Fortin's barometer and state how it is used to measure the atmospheric pressure.
The atmosphere is a layer of gases surrounding the planet.
A low-pressure system is also called ______ and ______.
High pressure is called ______.
______ is used to show the distribution of air pressure.
