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A Closer Look at Barometric Pressure in Our Lives
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Should I Replace My Speedometer Cluster Myself?

When you look at your dashboard what you are actually looking at is an instrument cluster. Within in the instrument cluster are several individual clusters, or gauges, that produce readings on certain aspects of the car. These readings are to inform you of different aspects of your car that are important for you to know. This information helps you to take care of your car and prevent further damage as well as know when to go to the gas station to fill up.One of the gauges in the instrument cluster is the speedometer cluster. The purpose of the speedometer gauge is to tell you how fast your car is traveling down the road. The gauge is the most looked at gauge and can prevent you from getting a ticket or causing an accident from going too fast. From time to time a speedometer cable may wear out. It may need to be replaced or simply greased. One way that you will know that there is likely a problem with your speedometer cable is you will hear a loud ticking sound in your car as you drive down the road. If you he...


Wristwatches With Altimeters - How The Barometer Works

If you are into watches with altimeters you need to know the basics of how they function. They're not all that complicated, but it is good to understand how they work so you can draw inference from the data they give you. The altimeter readout on the timepiece is simply a translation of barometric pressure. The barometric pressure technology is what drives much of these watches' altitude and weather predicting capabilities. Thus, without a barometer, these watches would be just another watch. The small aneroid wafer barometer technology that is housed inside the watch case is really the brains of the entire device. But, how does the watch read barometric pressure? I mean, the darned thing is so small - how can it possibly contain something as bulky as a barometer? What the devices were in the beginning there was no way that these things were going to be functional on such a small scale. However, with miniaturization of electronics, there are ways of sensing air pressure without having to actually have a colum...


Watching The Weather With A Barometer

While many weekend warriors head for the outdoors to escape the headaches of modern life. The outdoor experience can be enhanced without ruining the natural aspect of the trip with a serious weather instrument like a barometer.With that in mind, there is a hand held barometer on the market has functional weather features and is light weight. Most barometer are too heavy to take with you when hiking in the outdoors, but with a hand held barometer that weighs only a couple of ounces you will definitely want to add it to your backpack when hiking. A hand held barometer is even great for taking on long trips when weather information might prove vital.With a barometer that is hand held rather than when it is worn watch style on your wrist, there is always a danger of leaving it hanging some where. Even with the danger of accidentally leaving it hanging in a tree some where, many prefer a hand held barometer over those big and bulky barometers that you where on your wrist. Often times the watch style barometers hav...


How To Measure Pressure

Air is so light that you need the special instrument called a barometer to measure air pressure. The barometer was first thought of by an Italian scientist named Torricelli, in 1644. A simple experiment showed him that air had pressure, and that this pressure could be measured. You can do this same experiment. All you need is a glass tube about 3 feet long, closed at one end; some mercury (a metal sometimes called quicksilver); and a small dish. Fill the tube and the dish with mercury. Hold your finger over the open end of the tube and quickly turn the tube upside down in the dish. You now have a mercury barometer. The mercury in the tube will drop until it is about 30 inches above the dish. Fifteen pounds of air pressure, which is normal, will usually hold up about 30 inches of mercury. If the air pressure is lower, the height of the column of mercury will be less than 30 inches. If the air pressure is greater than 15 pounds, the column of mercury will be higher than 30 inches. You can use a mercury baromete...


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