Barometer - Page 4

A barometer is an instrument used to measure atmospheric pressure. It is a crucial tool in meteorology for weather forecasting and understanding atmospheric phenomena. Barometers can be classified into two main types: mercury barometers and aneroid barometers.A mercury barometer consists of a glass tube filled with mercury, where changes in atmospheric pressure cause the mercury level to rise or fall in the tube. An aneroid barometer, on the other hand, uses a sealed metal chamber that expands or contracts with pressure changes, which is translated into a pressure reading.Barometers are also used in various applications outside of meteorology, including aviation and altimetry, where they help determine altitude based on changes in atmospheric pressure. Additionally, the term "barometer" can be used metaphorically to describe an indicator or measure of change or trends in various fields, such as economics or social behavior.
1 2 3 4 5 6 … 9