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  2. IEEE 802.21 - Wikipedia

    en.wikipedia.org/wiki/IEEE_802.21

    The IEEE 802.21 refers to Media Independent Handoff (MIH) and is an IEEE standard published in 2008. The standard supports algorithms enabling seamless handover between wired and wireless networks of the same type as well as handover between different wired and wireless network types also called Media independent handover (MIH) or vertical handover.

  3. Aspect ratio (image) - Wikipedia

    en.wikipedia.org/wiki/Aspect_ratio_(image)

    Common aspect ratios used in film and displays images. The common film aspect ratios used in cinemas are 1.85:1 and 2.40:1. [1] Two common videographic aspect ratios are 4:3 (1. 3:1), [a] the universal video format of the 20th century, and 16:9 (1. 7:1), universal for high-definition television and European digital television.

  4. 1q21.1 duplication syndrome - Wikipedia

    en.wikipedia.org/wiki/1q21.1_duplication_syndrome

    1q21.1 duplication syndrome, also known as 1q21.1 microduplication, is an uncommon copy number variant associated with several congenital abnormalities, including developmental delay, dysmorphic traits, autism spectrum disorder, and congenital cardiac defects. [1]

  5. OTR-21 Tochka - Wikipedia

    en.wikipedia.org/wiki/OTR-21_Tochka

    OTR-21 Tochka (Russian: оперативно-тактический ракетный комплекс (ОТР) «Точка», romanized: operativno-takticheskiy ...

  6. September 21 - Wikipedia

    en.wikipedia.org/wiki/September_21

    1745 – A British government army led by Sir John Cope is defeated in less than 15 minutes by the Jacobite forces of Prince Charles Edward Stuart. [5]1776 – Part of New York City is burned shortly after being occupied by British forces.

  7. S&P 500 - Wikipedia

    en.wikipedia.org/wiki/S&P_500

    A linear chart of the S&P 500 daily closing values from January 3, 1950, to February 19, 2016 A logarithmic chart of the S&P 500 index daily closing values from January 3, 1950, to February 19, 2016 A daily volume chart of the S&P 500 index from January 3, 1950, to February 19, 2016 Logarithmic Chart of S&P 500 Index with and without Inflation and with Best Fit and other graphs to Feb 2024

  8. Formaldehyde - Wikipedia

    en.wikipedia.org/wiki/Formaldehyde

    Formaldehyde (/ f ɔːr ˈ m æ l d ɪ h aɪ d / ⓘ for-MAL-di-hide, US also / f ə r-/ ⓘ fər-) (systematic name methanal) is an organic compound with the chemical formula CH 2 O and structure H−CHO, more precisely H 2 C=O.