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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?
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 larger Sunday crossword, which appears in The New York Times Magazine, is an icon in American culture; it is typically intended to be a "Thursday-plus" in difficulty. [6] The standard daily crossword is 15 by 15 squares, while the Sunday crossword measures 21 by 21 squares.
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 ...
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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]
The Quitsato Sundial is a cultural-tourist place located at La Mitad Del Mundo, near to Cayambe, 47 km north of Quito, Ecuador. It was built in 2006 and inaugurated in 2007 as an independent, non-profit project in a 24,756 ft 2 (2,300 m 2) area. Its main goal is to share crucial aspects of the astronomical knowledge of the prehispanic cultures ...
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 ...