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Selasa, 30 Desember 2014

All About The U.S. National Geodetic Survey

All About The U.S. National Geodetic Survey


by Carey Bourdier


There are many agencies of the United States Government and some are certainly not very well known. This doesn't lessen their importance though as they contribute in making the nation stay on course. With regards to our nation's transportation and infrastructure, the U.S. National Geodetic Survey agency supports such function.

The word "geodetic" and its meaning can help one understand its purpose. The branch of science dedicated to determining the shape and size of the Earth and the location of points all over the globe is known as Geodesy. The agency and its scientists work from mapping to emergency response imagery and airport surveys to everything related to it.

The National Spatial Reference System, its definition and maintenance is that main purpose of this agency. Basically, this system provides accurate information about every square inch of the United States, including land and water. The staff continually maintains information about latitude and longitude as well as scale, height, gravity and orientation. As the earth continues to move and change, so does its types of statistics which can happen throughout the year or over time.

The construction of roads and bridges, as well as creating accurate property lines and the likes is what this type of information benefits greatly from. Problems can occur if the measurements are inaccurate. For example, a ship could run aground, if a map shows the depth of the ocean incorrectly, even if it's just an error of a few feet. Proper mapping and surveying is one of the many examples of how society benefits from it.

Highly accurate maps are produced at the U.S. National Geodetic Survey and a number of their staff are using satellites and other technology. To help recording changes in elevation, slope, scale and height other tools are used which comes in several variety. You have probably seen engineers and surveyors using a theodolite on your neighborhood as this is one frequently used surveyor's tool.

The theodolite is a device that measures angles in the horizontal and vertical planes. You can imagine how it important it is to know the angle and slope of land in general especially in the creation of our roads and in the construction of homes and other buildings. Even a small error could result in a building settling improperly or a bridge or road being constructed incorrectly. At the U.S. National Geodetic Survey, a theodolite is just one of the tools that might be used. A clinometer, also called an inclinometer, also might be used to measure angles of slope.




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Title: All About The U.S. National Geodetic Survey
Author: Carey Bourdier
Email: articles@zerocompany.com
Keywords: US National Geodetic Survey functions,US National Geodetic Survey,scientific instruments manufacturer,precision equipments manufacturer,alignment systems manufacturer,scientific instruments,precision equipments,compass
Word Count: 425
Category: Reference & Education
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