Ancient History
Eratosthenes in the 3rd century BC first proposed a system of latitude and longitude for a map of the world. By the 2nd century BC Hipparchus was the first to use such a system to uniquely specify places on the earth. He also proposed a system of determining longitude by comparing the local time of a place with an absolute time. This is the first recognition that longitude can be determined by accurate knowledge of time. In the 11th century Al-Biruni believed the earth rotated on its axis and this forms our modern notion of how time and longitude are related.
Read more about this topic: History Of Longitude
Famous quotes containing the words ancient history, ancient and/or history:
“Ancient history has an air of antiquity. It should be more modern. It is written as if the specator should be thinking of the backside of the picture on the wall, or as if the author expected that the dead would be his readers, and wished to detail to them their own experience.”
—Henry David Thoreau (1817–1862)
“An ancient prophecy ... pronounced, That the castle and lordship of Otranto should pass from the present family, whenever the real owner should be grown too large to inhabit it!”
—Horace Walpole (1717–1797)
“Every library should try to be complete on something, if it were only the history of pinheads.”
—Oliver Wendell Holmes, Sr. (1809–1894)