EVERYDAY SCIENCE

Detailed explanation-1: -A barometer is a scientific instrument used to measure atmospheric pressure, also called barometric pressure. The atmosphere is the layers of air wrapped around Earth. That air has a weight and presses against everything it touches as gravity pulls it to Earth. Barometers measure this pressure.

Detailed explanation-2: -Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes.

Detailed explanation-3: -Barometers are instruments used to predict short term changes in weather patterns by measuring air pressure. There are two types of barometers: mercury and aneroid.

Detailed explanation-4: -A barometer is a meteorological instrument which is used to measure atmospheric pressure.

Detailed explanation-5: -atmospheric pressure …can be measured with a mercury barometer (hence the commonly used synonym barometric pressure), which indicates the height of a column of mercury that exactly balances the weight of the column of atmosphere over the barometer.