Question

What is an aneroid barometer? State its advantages over a simple barometer.

Answer 1

Step 1: Aneroid barometer

1. Aneroid barometer is a device used to measure atmospheric pressure at a place.
2. Aneroid barometer is a type of barometer that functions without any use of liquid.
3. The word “aneroid” means “dry”.
4. Aneroid barometers use a small sealed cell consisting of beryllium and copper to measure changing pressure.

Step 2: Advantages of an aneroid barometer over a simple barometer

1. Due to the absence of liquid, there is no spilling over of liquid in an aneroid barometer.
2. It is compact, portable, and easy to handle.
3. It has no orientation issues, it can be fixed in any plane, and is not like a simple barometer, where a glass tube is to be held in an upright position.
4. Due to the high sensitivity of the aneroid barometer, it can easily measure small pressure changes.
5. It is free from the errors caused by impure or moist mercury.