01 Force and Motion II
02 Pressure
03 Electricity
04 Electromagnetism
05 Electronics
06 Nuclear Physics
07 Quantum Physics

2.2.8 Anaroid Barometer

Anaroid Barometer

The anaroid barometer is usually used to measure altitude, which is named as altimeter.

Q & A

Q: Explain why the barometer can be used to measure altitude.

A:

The atmospheric pressure is inversely proportional to the altitude. The altitude can be determined from the atmospheric pressure.

Q & A

Q: Why a simple barometer is not suitable to be used to measure altitude?

A:

  1. Hard to be carried
  2. Mercury is volatile. It can evaporate easily
  3. Mercury is poisonous