Who Discovered The Earth is Round?
He felt sure the earth was round.” -Emma Miler Bolenius ... inventing the concepts of latitude and longitude that we still use today, and constructed the first models and maps based on a spherical Earth. Once we knew the shape and size of the Earth ...
That land is your land
They boarded the Halifax Packet for Falmouth, England. Dixon never returned to America ... a "wedge" to go with the 12-mile circle that created the state's northernmost border. The Mason-Dixon survey line did not meet up with the circle.
The North Pole: Location, Weather, Exploration … and Santa
The Geographic North Pole is the northernmost point on the planet, where Earth’s axis intersects with its surface. Its latitude is 90 degrees north, and all longitudinal lines meet there ... will move to the point that they “flip” and compasses ...
How did the states establish long, straight borders before GPS?
What you get is a line of sight that defines a geodesic or great circle. It's the shortest distance between two points. However, except at the equator, it doesn't follow the parallels of latitude commonly ... Where the two lines meet, at the Tennessee ...
Squaring the circle
THE images of Mars that the Mariner 9 spacecraft sent back to earth ... south circles meet at the poles. On Mercator's map, they are parallel. So east-west distances widen artificially, the higher or lower you go. To compensate, lines of map latitude ...