Here are a few instruments that are used to track storms. The observations of a storm will help meteorologists predict the type of storm that is coming and how long it will last. It will also help them to better prepare the public in case of a severe storm.
There are instruments used to track the weather before the storm and they are the anemometer, the wind vane, the hygrograph, and the barometer.
Meteorologist use an instrument called an anemometer to measure the wind speed and the direction of the wind. The rotation of a windmill consists of three or four narrow cups. Each cup is attached to the ends of horizontal arms which are attached to a vertical axis. The information is then transmitted into the computer for observations.
A wind vane is an instrument used to indicate the direction of the wind. It consists of an irregularly shaped object, an arrow mounted at its center of a pole so it can go in the direction of the wind. The portion of the wind vane with the greater surface area, usually the tail, offers greater resistance to the wind and positions the vane so that the forward part points in the direction from which the wind is blowing. The wind vane must be mounted on a pole, tower or even on a tall building.
A hygrograph is used by meteorologists to measure and record humidity in the air. Sometimes human hairs are used. Hair grows longer in the damp air and it grows shorter in dry air.
A barometer has a glass column of about 30 inches in height and is closed at one end, with a small holding tank at the bottom. Mercury in the tube adjusts until the weight of the column balances the atmospheric force exerted on the small holding tank. High pressure places more downward force on the small holding tank, forcing the Mercury higher in the column which means good weather is coming.... [continues]
Cite This Essay
(2006, 05). Technology. StudyMode.com. Retrieved 05, 2006, from http://www.studymode.com/essays/Technology-88273.html
"Technology" StudyMode.com. 05 2006. 05 2006 <http://www.studymode.com/essays/Technology-88273.html>.
"Technology." StudyMode.com. 05, 2006. Accessed 05, 2006. http://www.studymode.com/essays/Technology-88273.html.