1. Mercury Barometer
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By Ankit Gupta
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Updated on 23 Apr 2025, 11:38 IST
A barometer is used to measure air pressure. Air pressure is the force that air exerts on the earth’s surface. Changes in air pressure help us predict the weather. If you are wondering "barometer meaning", it is an instrument used in meteorology (the study of weather). The main job of a barometer is to tell us whether the weather will be sunny, cloudy, rainy, or stormy.
A barometer is a scientific tool that measures atmospheric pressure.
Barometer definition: An instrument used to measure the pressure of the atmosphere.
बारोमीटर का अर्थ (Barometer Meaning in Hindi): वायुमंडलीय दाब मापने वाला यंत्र।
It is important in weather prediction and science experiments.
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The first barometer was invented by Evangelista Torricelli in 1643. He used mercury in a glass tube to measure air pressure. That’s why the mercury barometer is one of the oldest types of barometers.
Who invented the barometer? Evangelista Torricelli, an Italian physicist.
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The barometer is used for many important things:
| Use | Explanation |
| Weather Prediction | Barometers help predict rain, storms, and sunshine based on air pressure changes. |
| Aviation | Used in airplanes to determine altitude. |
| Scientific Research | Used in physics and environmental science labs. |
| Navigation | Hikers and sailors use barometers to check weather and stay safe. |
| Daily Use | Some homes use barometers as part of weather stations to plan outdoor activities. |
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This movement helps meteorologists understand what kind of weather to expect.
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| Feature | Mercury Barometer | Aneroid Barometer | Digital Barometer |
| Accuracy | High | Moderate | High |
| Portability | Low | High | High |
| Environmental Safety | Low | High | High |
| Cost | Expensive | Affordable | Varies |
A barometer is a very useful instrument in science and daily life. It helps us understand the atmospheric pressure and predict the weather. Whether you are using a mercury barometer, aneroid barometer, or a fortin barometer, the basic idea remains the same — measuring air pressure to learn more about our environment.
Because mercury is dense and stable.
Yes, via aneroid or digital systems.
Can cause headaches or joint pain.
For altitude measurement.
Observe pressure trends to forecast weather.
A barometer is a scientific tool that measures air pressure (also called atmospheric pressure). It helps meteorologists and scientists predict weather changes. When air pressure drops, it may signal rain or a storm. When it rises, the weather is likely to be clear.
A barometer is used to measure atmospheric pressure. This helps in understanding weather conditions. For example, a falling pressure often means bad weather is coming, while rising pressure indicates good weather.
There are mainly three types of barometers:
The barometer was invented by Evangelista Torricelli, an Italian scientist, in the year 1643. He created the first mercury barometer to measure air pressure using a glass tube filled with mercury.