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String girdling Earth. String girdling Earth is a mathematical puzzle with a counterintuitive solution. In a version of this puzzle, string is tightly wrapped around the equator of a perfectly spherical Earth. If the string should be raised 1 metre (3 ft 3 in) off the ground, all the way along the equator, how much longer would the string be?
Older monument to the equator in Calacalí (2008) The Ciudad Mitad del Mundo ( Middle of the World City) is a tract of land owned by the prefecture of the province of Pichincha, Ecuador. It is located at San Antonio parish of the canton of Quito, 26 km (16 mi) north of the center of Quito. The grounds contain the Monument to the Equator, which ...
The line-crossing ceremony is an initiation rite in some English-speaking countries that commemorates a person's first crossing of the Equator. [1] The tradition may have originated with ceremonies when passing headlands, and become a "folly" sanctioned as a boost to morale, [2] or have been created as a test for seasoned sailors to ensure their new shipmates were capable of handling long ...
The Equator during the boreal winter, spanning from December to March. The equator is a circle of latitude that divides a spheroid, such as Earth, into the Northern and Southern hemispheres. On Earth, the Equator is an imaginary line located at 0 degrees latitude, about 40,075 km (24,901 mi) in circumference, halfway between the North and South ...
The first aerial circumnavigation of the world was completed in 1924 by four aviators from an eight-man team of the United States Army Air Service, the precursor of the United States Air Force. The 175-day journey from April to September covered over 26,345 miles (42,398 km). [ 1] The team generally traveled east to west, around the northern ...
Years before Gillespie began searching for clues around Gardner Island, someone else had suspected the island as a possible landing sight. Fred Hooven, an engineer and a pioneering radio expert ...
Prime meridian (Greenwich) Coordinates: 51°28′40.12″N 0°00′05.31″W. Tourists queuing to take pictures on the line of the historical prime meridian at the Royal Observatory, Greenwich. The Greenwich meridian is a prime meridian, a geographical reference line that passes through the Royal Observatory, Greenwich, in London, England. [ 1]
Geodesy. Earth's circumference is the distance around Earth. Measured around the equator, it is 40,075.017 km (24,901.461 mi). Measured passing through the poles, the circumference is 40,007.863 km (24,859.734 mi). [ 1] Measurement of Earth's circumference has been important to navigation since ancient times. The first known scientific ...