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  2. Geographical mile - Wikipedia

    en.wikipedia.org/wiki/Geographical_mile

    The geographical mile is an international unit of length determined by 1 minute of arc (⁠ 1 / 60 ⁠ degree) along the Earth's equator. For the international ellipsoid 1924 this equalled 1855.4 metres. [1] The American Practical Navigator 2017 defines the geographical mile as 6,087.08 feet (1,855.342 m). [2]

  3. Mile - Wikipedia

    en.wikipedia.org/wiki/Mile

    The "old English mile" of the medieval and early modern periods varied but seems to have measured about 1.3 international miles (2.1 km). [17] [18] The old English mile varied over time and location within England. [18] The old English mile has also been defined as 79,200 or 79,320 inches (1.25 or 1.2519 statute miles). [19]

  4. List of map projections - Wikipedia

    en.wikipedia.org/wiki/List_of_map_projections

    Equal Earth: Pseudocylindrical Equal-area Bojan Šavrič, Tom Patterson, Bernhard Jenny Inspired by the Robinson projection, but retains the relative size of areas. 2011 Natural Earth: Pseudocylindrical Compromise Tom Patterson: Originally by interpolation of tabulated values. Now has a polynomial. 1973 Tobler hyperelliptical: Pseudocylindrical ...

  5. League (unit) - Wikipedia

    en.wikipedia.org/wiki/League_(unit)

    today: 1,760 yards: On 1 July 1959, the imperial mile was standardized to an exact length in metres 1,609.3472 (statute) mile: United States: 1893: today: 1,760 yards: From 1959; also called the U.S. Survey Mile. From then its only utility has been land survey, before it was the standard mile. From 1893 its exact length in metres was: ⁠ 3,600 ...

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. Location of Earth - Wikipedia

    en.wikipedia.org/wiki/Location_of_Earth

    Knowledge of the location of Earth has been shaped by 400 years of telescopic observations, and has expanded radically since the start of the 20th century. Initially, Earth was believed to be the center of the Universe , which consisted only of those planets visible with the naked eye and an outlying sphere of fixed stars . [ 1 ]

  8. Earth radius - Wikipedia

    en.wikipedia.org/wiki/Earth_radius

    Earth radius (denoted as R 🜨 or R E) is the distance from the center of Earth to a point on or near its surface. Approximating the figure of Earth by an Earth spheroid (an oblate ellipsoid), the radius ranges from a maximum (equatorial radius, denoted a) of nearly 6,378 km (3,963 mi) to a minimum (polar radius, denoted b) of nearly 6,357 km (3,950 mi).

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