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  2. Null Island - Wikipedia

    en.wikipedia.org/wiki/Null_Island

    Null Island is the location at zero degrees latitude and zero degrees longitude), i.e., where the prime meridian and the equator intersect. Since there is no landmass located at these coordinates, it is not an actual island. The name is often used in mapping software as a placeholder to help find and correct database entries that have ...

  3. World clock - Wikipedia

    en.wikipedia.org/wiki/World_clock

    The World Clock in Alexanderplatz displays 146 cities in all 24 time zones on its head. [2] [3] It could also be a picture map of the world with embedded analog or digital time-displays. A moving circular map of the world, rotating inside a stationary 24-hour dial ring. Alternatively, the disc can be stationary and the ring moving.

  4. Null infinity - Wikipedia

    en.wikipedia.org/wiki/Null_infinity

    Typically, the radial and time coordinates are transformed into null coordinates = + and =. These are then transformed as p = tan − 1 ⁡ u {\displaystyle p=\tan ^{-1}u} and q = tan − 1 ⁡ v {\displaystyle q=\tan ^{-1}v} in order to use the properties of the inverse tangent function to map infinity to a finite value. [ 2 ]

  5. Clock position - Wikipedia

    en.wikipedia.org/wiki/Clock_position

    Neglecting the length of the vessel, and presuming that he is at the bow, he observes the time number lying on the line of sight. [1] For example, 12 o'clock means directly ahead, 3 o'clock means directly to the right, 6 o'clock means directly behind, and 9 o'clock means directly to the left. The clock system is not confined to transportation.

  6. List of artificial islands - Wikipedia

    en.wikipedia.org/wiki/List_of_artificial_islands

    Located in Montreal: Gaven Reefs: Disputed: 0.136 0 Currently being converted into an island by China as part of the Great Wall of Sand. Also claimed by Vietnam, the Philippines and Taiwan. Chinese Garden Singapore: 0.135 0 Johnson South Reef: Disputed: 0.109 0 Currently being converted into an island by China as part of the Great Wall of Sand.

  7. Just Room Enough Island - Wikipedia

    en.wikipedia.org/wiki/Just_Room_Enough_Island

    Northeast side of the island. Just Room Enough Island, also known as Hub Island, [1] is an island located in the Thousand Islands chain, in New York, United States. The island is known for being the smallest inhabited island, which appears to be around 3,300 square feet (310 m 2), or about one-thirteenth of an acre. Purchased by the Sizeland ...

  8. Null - Wikipedia

    en.wikipedia.org/wiki/Null

    Null (SQL) (or NULL), a special marker and keyword in SQL indicating that something has no value; Null character, the zero-valued ASCII character, also designated by NUL, often used as a terminator, separator or filler. This symbol has no visual representation. Null device, a virtual file that discards data written to it, on Unix systems /dev/null

  9. List of islands of Papua New Guinea - Wikipedia

    en.wikipedia.org/wiki/List_of_islands_of_Papua...

    This is a list of islands in Papua New Guinea, as to most of its 600 main islands, by province listed NW to SE. [ 1 ] Numbered provinces in Papua New Guinea, referred to in the text