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.
Best Answer: The meridian of a place is the longitude. Standard meridians are every 15 degrees starting in Greenwich England (Longitude=0 degrees) and going around the world.Since one full rotation, 360 degrees, of the Earth takes 24 hours we see that 1 hour of time equates to 15 degrees of longitude or 360 degrees of longitude/24 hours= 15 degrees of longitude.tandard meridians are every 15 degrees starting in Greenwich England (Longitude=0 degrees) and going around the world. Since one full rotation, 360 degrees, of the Earth takes 24 hours we see that 1 hour of time equates to 15 degrees of longitude or 360 degrees of longitude/24 hours= 15 degrees of longitude.