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  2. National conventions for writing telephone numbers - Wikipedia

    en.wikipedia.org/wiki/National_conventions_for...

    All telephone numbers in Iran have 11 digits (initial 0 and ten digits). The first two or three digits after the zero are the area code. The possibilities are: (0xx) xxxx xxxx (for landlines), 09xx xxx xxxx (for cellphones) and 099xx xxx xxx (for MVNO). When making a call within the same landline area code, initial 0 plus the area code must be ...

  3. United States Space Surveillance Network - Wikipedia

    en.wikipedia.org/wiki/United_States_Space...

    GEODSS system can track objects as small as a basketball more than 20,000 miles (30,000 km) in space or a chair at 35,000 miles (56,000 km), and is a vital part of USSPACECOM's Space Surveillance Network. Each GEODSS site tracks approximately 3,000 objects per night out of 9,900 object that are regularly tracked and accounted for.

  4. H&M - Wikipedia

    en.wikipedia.org/wiki/H&M

    H & M Hennes & Mauritz AB, commonly known by its brand name H&M, is a multinational fashion retailer headquartered in Stockholm, Sweden. Known for its fast fashion business model, H&M offers affordable [clarification needed] clothing, accessories, and homeware. The company has a significant global presence, operating thousands of stores across ...

  5. List of medical abbreviations: H - Wikipedia

    en.wikipedia.org/wiki/List_of_medical...

    human anti-chimeric antibody. HACE. High-altitude cerebral edema. HACEK. acronym for a group of bacteria that are a frequent cause of endocarditis in children. HAD. HIV-associated dementia. HADS. Hospital Anxiety and Depression Scale.

  6. Number sign - Wikipedia

    en.wikipedia.org/wiki/Number_sign

    The symbol # is known variously in English-speaking regions as the number sign, [1] hash, [2] or pound sign. [3] The symbol has historically been used for a wide range of purposes including the designation of an ordinal number and as a ligatured abbreviation for pounds avoirdupois – having been derived from the now-rare ℔ .

  7. Harmonic number - Wikipedia

    en.wikipedia.org/wiki/Harmonic_number

    In mathematics, the n -th harmonic number is the sum of the reciprocals of the first n natural numbers: [1] Starting from n = 1, the sequence of harmonic numbers begins: Harmonic numbers are related to the harmonic mean in that the n -th harmonic number is also n times the reciprocal of the harmonic mean of the first n positive integers.

  8. Cobra Dane - Wikipedia

    en.wikipedia.org/wiki/Cobra_Dane

    The AN/FPS-108 COBRA DANE is a PESA phased array radar installation operated by Raytheon for the United States Space Force (originally for the United States Air Force) at Eareckson Air Station on the island of Shemya, Aleutian Islands, Alaska. [1] The system was built in 1976 and brought online in 1977 for the primary mission of gathering ...

  9. H&M Design Award - Wikipedia

    en.wikipedia.org/wiki/H&M_Design_Award

    H&M Design Award. The H&M Design Award is an design prize for fashion graduates. The prize was established in 2012 to support young designers with starting careers in fashion. [1] The prize is awarded every year by Hennes & Mauritz AB ( H&M ), a Swedish multinational clothing-retail company. This prize was not awarded in 2021 or 2022.