EARTH CO-ORDINATE SYSTEM

CO-ORDINATES ON EARTH

Earth is in somewhat spherical in shape . North (N) , South (S), East (E) and West (W) are the four major direction , other directions lie in between these direction . North and South are the two poles , these are axis at which earth rotates . ( Please read the blog how to use campass to know about direction finding ).

Here I am telling you about the coordinate convention.

North and South are two poles .

First talk about the latitude . N and S are latitudes.

Consider the earth in two parts from equator.

Consider for N , at equator N=0⁰ , Now consider the horizontal parallel lines that moves towards the north pole, at exact north pole N=90^o.

Consider for S , at equator S=0⁰, Now consider the horizontal parallel lines that moves towards the south pole at eaxact south pole E=90⁰.

Conclusion is latitude varies from 0⁰  to 90⁰

Now discuss about the Longitude . E and W are the longitudes.

Now Consider earth in two parts from prime meridian and antemeridian.

E=W=0 at prime and E goes on increasing as move towards East direction and W goes on increasing as goes on moving towards the west direction and again E=W=180⁰ .

Conclusion drawn from the above statement is that longitude varies from 0⁰ to 180⁰ i.e E vaies from 0⁰ to 180⁰ and W varies from 0⁰  to 180 ^0.

latitude is N , S and Longitude can be E,W .

LATITUDE	LONGITUDE
N (00 to 900)	E (00 to 1800)
N (00 to 900)	W (00 to 1800)
S (00 to 900)	E (00 to 1800)
S (00 to 900)	W (00 to 1800)

Combined information from latitude and longitude will give the exact information in 3D. Lat – Long at particular location can be taken by the GPS ( See GPS in blogs for understanding GPS Working ).

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