## How was longitude developed?

In 1530, mathematician Gemma Frisius proposed a method of calculating longitude with a clock: It would be set upon departure and kept at absolute time, which could be compared with the time upon arrival. As for longitude at sea, the movements of a ship made the accurate timing of eclipses impossible.

## Which came first latitude or longitude?

Handy tip: when giving a co-ordinate, latitude (north or south) always precedes longitude (east or west). Latitude and longitude are divided in degrees (°), minutes (‘) and seconds (“).

## How is latitude and longitude written?

Write the latitude and longitude coordinates. When writing latitude and longitude, write latitude first, followed by a comma, and then longitude. For example, the above lines of latitude and longitude would be written as “15°N, 30°E.”

## How are latitude lines created?

Latitude and Longitude Defined The latitude is the angle formed by a line going from the center of the earth to the equator at the point on the equator that is closed to the point of interest and another line that goes from the center of the earth to the parallel that goes through the point of interest.

## Who was the first person to write latitude and longitude?

The ancient Greek geographer Ptolemy created a grid system and listed the coordinates for places throughout the known world in his book Geography. But it wasn’t until the middle ages that the latitude and longitude system was developed and implemented. This system is written in degrees, using the symbol °.

Longitude lines are perpendicular to and latitude lines are parallel to the Equator. A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols.

## How is longitude measured in degrees and minutes?

Measured also in degrees, minutes, and seconds, longitude is the amount of arc created by drawing first a line from the Earth’s centre to the intersection of the Equator and the prime meridian and then another line from the Earth’s centre to any point elsewhere on the Equator.

## Who was the inventor of the geographic coordinate system?

The invention of a geographic coordinate system is generally credited to Eratosthenes of Cyrene, who composed his now-lost Geography at the Library of Alexandria in the 3rd century BC.