When someone asks us to appear unexpectedly exit from even the deepest sleep, what shape is the Earth, without even thinking about odpowiedzielibyśmy that has the shape of a sphere. Not always been straightforward. Initially, in accordance with his surroundings thought is it plane. Similar observations are made by small children, you will see our planet in this way.
Over time, however, began to pass, that the Earth is round. Initially these assumptions related to observations of astronomicznymi. Particularly helpful was watching the Eclipse of the Moon, vanishing behind the horizon ships and sewn in the shape of the horizon. The evidence on the spherical shape of the Earth were finally confirmed when Ferdinand Magellan circumnavigate around it. Do you make such an observation has had an impact on our lives?
The shape of the Earth at great importance during the measurement of GEODESIC for large areas. The company, which is entrusted with the task of examining geodetic altitude area with a large surface area for obtaining wierzytelnych results must include the kulistość of our planet.
Execution of the measurements of this kind is one of the areas of surveying land survey above. In contrast to examining an small areas of Geodesy lower it must adopt in its calculation, that the Land in the shape of a sphere or flattened elipsoidy Rotary. Strictly speaking the subject of her research is the precise spirit leveling and triangulation basic areas such as the size of a continent or country.
