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  2. Sheep - Wikipedia

    en.wikipedia.org/wiki/Sheep

    The exact line of descent from wild ancestors to domestic sheep is unclear. [2] The most common hypothesis states that Ovis aries is descended from the Asiatic (O. gmelini) species of mouflon; the European mouflon (Ovis aries musimon) is a direct descendant of this population. [3]

  3. Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Global_Positioning_System

    To determine the current Gregorian date, a GPS receiver must be provided with the approximate date (to within 3,584 days) to correctly translate the GPS date signal. To address this concern in the future the modernized GPS civil navigation (CNAV) message will use a 13-bit field that only repeats every 8,192 weeks (157 years), thus lasting until ...

  4. Impact event - Wikipedia

    en.wikipedia.org/wiki/Impact_event

    In 2005 it was estimated that the chance of a single person born today dying due to an impact is around 1 in 200,000. [27] The two to four-meter-sized asteroids 2008 TC 3 , 2014 AA , 2018 LA , 2019 MO , 2022 EB5 , and the suspected artificial satellite WT1190F are the only known objects to be detected before impacting the Earth.

  5. San Antonio - Wikipedia

    en.wikipedia.org/wiki/San_Antonio

    San Antonio (/ ˌ s æ n æ n ˈ t oʊ n i oʊ / SAN an-TOH-nee-oh; Spanish for "Saint Anthony") is a city in the U.S. state of Texas and the most populous city in Greater San Antonio, the third-largest metropolitan area in Texas and the 24th-largest metropolitan area in the United States at 2.6 million people in the 2020 U.S. census. [12]

  6. Vacuum tube - Wikipedia

    en.wikipedia.org/wiki/Vacuum_tube

    Later thermionic vacuum tubes, mostly miniature style, some with top cap connections for higher voltages. A vacuum tube, electron tube, [1] [2] [3] thermionic valve (British usage), or tube (North America) [4] is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied.

  7. iPhone - Wikipedia

    en.wikipedia.org/wiki/IPhone

    The iPhone incorporated a 3.5-inch multi-touch display with few hardware buttons, and ran the iPhone OS operating system with a touch-friendly interface, then marketed as a version of Mac OS X. [15] It was the first mobile phone to use multi-touch technology. [16]

  8. London Underground - Wikipedia

    en.wikipedia.org/wiki/London_Underground

    The Piccadilly line will be part of the New Tube for London Project. This will replace the existing fleet with new air-cooled walk-through trains and a new signalling system to allow Automatic Train Operation. The line is predicted to run 30–36 trains per hour, up to a 50% increase compared to the 24–25 train per hour service provided today.

  9. United Arab Emirates - Wikipedia

    en.wikipedia.org/wiki/United_Arab_Emirates

    In 637, Julfar (in the area of today's Ras Al Khaimah) was an important port that was used as a staging post for the Islamic invasion of the Sasanian Empire. [30] The area of the Al Ain / Buraimi Oasis was known as Tu'am and was an important trading post for camel routes between the coast and the Arabian interior.