What is an aneroid borometer?

An altimeter is an aneroid barometer which makes use of the change in atmospheric pressure with the change in height above the sea level (altitude). What is the approximate value of atmospheric pressure at sea level in S.I unit?

An altimeter is an aneroid barometer which makes use of the change in atmospheric pressure with the change in height above the sea level (altitude). How does the atmospheric pressure change with increase in height above the sea level?

What are the advantages of an aneroid barometer over a simple barometer ?

What are the advantages of an aneroid barometer over a mercury barometer ?

State two advantages of an aneroid barometer over a simple barometer.

What is lanthanoid contraction? What is its cause and what ar its consequences ?