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  2. Radar mile - Wikipedia

    en.wikipedia.org/wiki/Radar_mile

    Radar mile or radar nautical mile is an auxiliary constant for converting a (delay) time to the corresponding scale distance on the radar display. [1] Radar timing is usually expressed in microseconds. To relate radar timing to distances traveled by radar energy, the speed is used to calculate it.

  3. Data mile - Wikipedia

    en.wikipedia.org/wiki/Data_mile

    In radar-related subjects and in JTIDS, a data mile is a unit of distance equal to 6,000 feet (1,829 metres; 0.9875 nautical miles; 1.136 miles). An international mile is 0.88 data mile. The speed of light is 299,792,458 metres per second (983,571,056 ft/s), or about one foot per nanosecond .

  4. Vincenty's formulae - Wikipedia

    en.wikipedia.org/wiki/Vincenty's_formulae

    Vincenty's goal was to express existing algorithms for geodesics on an ellipsoid in a form that minimized the program length (Vincenty 1975a). His unpublished report (1975b) mentions the use of a Wang 720 desk calculator, which had only a few kilobytes of memory.

  5. Help:Convert units - Wikipedia

    en.wikipedia.org/wiki/Help:Convert_units

    Unit type Unit code Unit name Area: a: are: m2: square metre Charge: coulomb: coulomb Energy: J: joule Force: N: newton Length: m: metre Magnetic field strength: T ...

  6. Nautical mile - Wikipedia

    en.wikipedia.org/wiki/Nautical_mile

    A nautical mile is a unit of length used in air, marine, and space navigation, and for the definition of territorial waters. [2] [3] [4] Historically, it was defined as the meridian arc length corresponding to one minute (⁠ 1 / 60 ⁠ of a degree) of latitude at the equator, so that Earth's polar circumference is very near to 21,600 nautical miles (that is 60 minutes × 360 degrees).

  7. Knot (unit) - Wikipedia

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

    1 nautical mile per hour (by definition), 1 852.000 metres per hour (exactly), [5] 0.51444 metres per second (approximately), 1.15078 miles per hour (approximately), 20.25372 inches per second (approximately) 1.68781 feet per second (approximately). The length of the internationally agreed nautical mile is 1 852 m.

  8. AOL Mail

    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!

  9. Yard - Wikipedia

    en.wikipedia.org/wiki/Yard

    3937 survey yards = 3600 meters [69] 1 survey yard ≈ 0.914 401 83 meters [69] 1 survey mile = 8 furlongs = 80 chains = 1760 survey yards. Comparing international yards and survey yards; 500,000 (international) yards = 499,999 survey yards = 457,200 meters 1 (international) yard = 0.999 998 survey yards (exact) [69] 1 (international) mile = 0. ...