What is a Barometer?
How a Barometer WorksSo what is a barometer? It's one of the most important weather instruments used by meteeorologists everywhere. Learn about this cool weather instrument.
Barometers have been used for years as a main source for forecasting the coming weather conditions. If you are curious as to how they work, or how to read a barometer, it's really not that hard at all. For starters, you should know that barometers measure the weight of the atmosphere. There are many kinds of barometers. The older kinds of barometers used mercury to measure the pressure of the atmosphere.
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There was a column that would be filled with mercury, and when the air pressure rises and falls, so does the mercury. The notches on the tube or column would be the reading of measurement of the atmospheric pressure at the time (in millimeters).
Many analog baroemters today are sensitive to air pressure, and that's how the atmospheric pressure is measured. The reading is then displayed using a dial with number on it. The measurments are in inches and you will hear this or see this many times on television. You may also see that pressure is measured in millibars.
For example hurricanes are considered very strong is their pressure is closer to 900 and weaker if the pressure is closer to 1000. Nowadays, you can find many electronic barometers or weather stations that will take barometric readings. These new marvels of techonology use electric charges to measure the pressure. Meteorlogists use barometers to forecast the upcoming weather for the next few days. Falling pressure means a low pressure system is likely on the way with stormy weather.
Rising pressure means a high pressure system is moving in and good weather can likely be expected. If you are looking for a barometer for your home, there are many places to find them online. It can be a fun addition to your home, especially if you or someone in your family loves the weather.
Make Your Own Barometer
You can also make your own barometer with a few simple materials that can be found anywhere. It won't be anything fancy, but it will be a great way to predict the weather on your own...and have some fun while at it. Find out how to make your own baromter.
Barometric Pressure and Headaches
Find out how you can use barometer readings to see if changes in pressure might be causing your headaches
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