In order that it was possible to define unambiguously location of a point in space, geographical coordinates were thought up. Thanks to this system it is always possible to find any point on the globe, on the card or on the area.
It is required to you
- - card or globe;
- - electronic card;
- - satellite navigator.
Instruction
1. To determine geographical coordinates of a point, take the map with designation of meridians and parallels. Consider, the more there will be a frequency of these lines and the card is more detailed, the more precisely you will manage to determine the width and longitude of which any coordinates consist.
2. To find width, use the horizontal lines nacherchenny on the card – parallels. Define on what parallel there is your point, and find its value in degrees. About each horizontal parallel there is a designation in degrees (at the left and on the right). If the point is located directly on it, safely draw a conclusion that its width is equal to this value.
3. If the chosen place lies between two parallels specified on the card, determine the width of the next to it of a parallel and add to it arch length in degrees to a point. Count length of an arch by means of a protractor or approximately, approximately. For example, if the point in the middle between parallels 30º and 35º, then its width is equal 32.5º. Put designation N if the point is located over the equator (northern latitude) and designation S if it is under the equator (southern latitude).
4. Meridians – vertical lines on the card will help to determine longitude to you. Find a meridian, closest located on the card to your point and look at its coordinates specified from above and from below (in degrees). Measure by means of a protractor or estimate approximately arch length between this meridian and the chosen place. Add received longitudes and receive the longitude of a required point.
5. With Internet access or the electronic card place coordinates will also help to define the computer. For this purpose open the card, for example, of http://maps.rambler.ru/, then enter the name of the place in the top window or specify it on the card by means of the cursor (it is located in the center of the screen). Look, in the left bottom corner exact coordinates of a point are specified.
6. To determine coordinates on the area, take the navigation satellite system. Here you will be able how to determine coordinates of the location, and geographical coordinates of any point specified on the card.