Symptoms include: 1  Itching. 2  Significant tearing and production of thick mucus. 3  The feeling of having something in the eye (foreign body sensation) 4  Aversion to light (photophobia)
Geographic coordinate system. Longitude lines are perpendicular to and latitude lines are parallel to the equator. A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position, and two or three of the numbers represent a horizontal position.
To find a location on a map by using the latitude and longitude of that location, enter the coordinates in decimal degrees. If the coordinates that you want to enter are in degrees and minutes, convert the number of minutes to a decimal value.o convert Seconds to decimals, divide by 3600. As an example, a latitude of 122 degrees 45 minutes 45 seconds North is equal to 122.7625 degrees North. So the complete formula looks similar the following: http://www.fcc.gov/mb/audio/bickel/DDDMMSS-decimal.html.