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latitude and longitude

Latitude and longitude are angles that uniquely define points on a sphere. Together, the angles comprise a coordinate scheme that can locate or identify geographic positions on the surfaces of planets such as the earth.

Latitude is defined with respect to an equatorial reference plane. This plane passes through the center C of the sphere, and also contains the great circle representing the equator. The latitude of a point P on the surface is defined as the angle that a straight line, passing through both P and C, subtends with respect to the equatorial plane. If P is above the reference plane, the latitude is positive (or northerly); if P is below the reference plane, the latitude is negative (or southerly). Latitude angles can range up to +90 degrees (or 90 degrees north), and down to -90 degrees (or 90 degrees south). Latitudes of +90 and -90 degrees correspond to the north and south geographic poles on the earth, respectively.

 

Longitude is defined in terms of meridians, which are half-circles running from pole to pole. A reference meridian, called the prime meridian , is selected, and this forms the reference by which longitudes are defined. On the earth, the prime meridian passes through Greenwich, England; for this reason it is also called the Greenwich meridian. The longitude of a point P on the surface is defined as the angle that the plane containing the meridian passing through P subtends with respect to the plane containing the prime meridian. If P is to the east of the prime meridian, the longitude is positive; if P is to the west of the prime meridian, the longitude is negative. Longitude angles can range up to +180 degrees (180 degrees east), and down to -180 degrees (180 degrees west). The +180 and -180 degree longitude meridians coincide directly opposite the prime meridian.

Latitude and longitude coordinates on the earth are sometimes extended into space to form a set of celestial coordinates.

This was last updated in June 2015

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thanks, that was helpful
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Very helpful,because explained clearly in simple words with drawing .

Thanks a lot.
NKP SINGH
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I have googled but the best i have read and it is so clear
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nice explanation
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thee explanation confused me a lot
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really simple and informative even though i am not interested in such topic
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thanks, simple and clear
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Crisp clear explanation. Thank You!
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Thanks,
Now I get the clear concept.
Really helpful.
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hurrah!finally i got the notes
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Thank you very much
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well done :)
now my concept is so clear.
thanks
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thanks for the answer its really help full.
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very lucid....
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it woks
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i want to know about latitude and longitude.
when i find may birth rasi then need latitude and longitude. if i don't know about latitude and longitude. then how to find latitude and longitude.
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great help thank you
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thank you very helpful from to yo
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Great....thx..
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great..thanks to uploader :)
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thanks a ton...for this simple explanation..
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It really helped me very much
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It helped me and so I got my notes
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it is helpfull for seminor, assignment,thankyou.
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thank you for helping me to clearly understand latitude and longitude
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I have a test and this helped me a lot thanks and well I passed it well done for me happy face lol
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this did not help me this is all rong not right rong thanks a lot for not helping
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really easy to understand...Thanks :)
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this helped a lot with my HW . thanks for the help ;)
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Just kidding it helped me alot thankx for the info
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Thanks..very well explained!
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that is a longitude and latitude this is a pont

























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thanx for this info.
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Excellent explanation of longitude and latitude.
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