What is the Difference Between Barometer and Manometer?

The main difference between a barometer and a manometer lies in the type of pressure they measure. Here are the key differences between the two devices:

• Barometer: A barometer is a device that measures changes in air pressure as a function of distance above or below sea level. It is predominantly used for weather forecasting, as changes in atmospheric pressure can indicate upcoming weather changes.
• Manometer: A manometer, on the other hand, is a device that measures liquid pressure in relation to an external source, which is commonly the Earth's atmosphere. Manometers are used to measure the pressure of gas or liquid matters and are often used in various applications, such as calculating flow rates for calibrated orifices or nozzles.

In summary, a barometer measures atmospheric pressure and is primarily used for weather forecasting, while a manometer measures fluid pressure, such as that of gases or liquids, and is used in various applications where pressure differences need to be measured.

Comparative Table: Barometer vs Manometer

Here is a table comparing the differences between a barometer and a manometer:

In summary, barometers are used to measure atmospheric pressure for weather forecasting, while manometers measure fluid pressure in various applications, including atmospheric pressure. Both devices come in different designs and configurations, but they serve different purposes in measuring pressure.