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[2] Charting a world map requires global knowledge of the Earth, its oceans, and its continents. From prehistory through the Middle Ages , creating an accurate world map would have been impossible because less than half of Earth's coastlines and only a small fraction of its continental interiors were known to any culture.
By using narrow zones of 6° of longitude (up to 668 km) in width, and reducing the scale factor along the central meridian to 0.9996 (a reduction of 1:2500), the amount of distortion is held below 1 part in 1,000 inside each zone. Distortion of scale increases to 1.0010 at the zone boundaries along the equator.
The WGS 84 datum surface is an oblate spheroid with equatorial radius a = 6 378 137 m at the equator and flattening f = 1 ⁄ 298.257 223 563. The refined value of the WGS 84 gravitational constant (mass of Earth's atmosphere included) is GM = 3.986 004 418 × 10 14 m 3 /s 2. The angular velocity of the Earth is defined to be ω = 72.921 15 × ...
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A weather system high-pressure area can cause a sinking of 5 mm. Scandinavia is rising by 1 cm a year as a result of the melting of the ice sheets of the last ice age, but neighboring Scotland is rising by only 0.2 cm. These changes are insignificant if a regional datum is used, but are statistically significant if a global datum is used. [13]
Dymaxion map of the world with the 30 largest countries and territories by area. This is a list of the world's countries and their dependencies, ranked by total area, including land and water.
I've traveled to 50 of the countries on the 2024 Travel and Tourism Index. Germany and the United Kingdom were my least favorite trips from the countries on the list.. On the other hand, Spain and ...
4. Overindulgence. Especially when entire days are spent roasting turkeys and hams, and bars are stocked for festive gatherings, overindulging in food or alcohol is common during the holiday season.