Advertisements
Advertisements
Question
Draw a simple labelled diagram of a Fortin barometer and state how it is used to measure the atmospheric pressure.
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
The atmospheric pressure is nearly 105 Pa.
What is the purpose of a barometer?
How is the barometric height of a simple barometer affected if A drop of liquid is inserted inside the tube?
Explain briefly the factors that affect Atmospheric Pressure.
Why do not we feel uneasy even under enormous pressure of the atmosphere above as?
Describe an experiment to demonstrate that air exerts pressure.
Define one atmosphere.
Define Low pressure.
Define High pressure
Give Reason for the following
Our ears pop in Airplanes.
