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  2. National Council of Educational Research and Training

    en.wikipedia.org/wiki/National_Council_of...

    Those who wish to adopt the textbooks are required to send a request to NCERT, upon which soft copies of the books are received. The material is press-ready and may be printed by paying a 5% royalty, and by acknowledging NCERT. [11] The textbooks are in color-print and are among the least expensive books in Indian book stores. [11]

  3. English language - Wikipedia

    en.wikipedia.org/wiki/English_language

    v. t. e. English is a West Germanic language in the Indo-European language family, whose speakers, called Anglophones, originated in early medieval England on the island of Great Britain. [4][5][6] The namesake of the language is the Angles, one of the ancient Germanic peoples that migrated to Britain.

  4. Wikipedia - Wikipedia

    en.wikipedia.org/wiki/Wikipedia

    Wikipedia was launched on January 15, 2001 [20] as a single English-language edition at www.wikipedia.com, [W 6] and was announced by Sanger on the Nupedia mailing list. [22] The name originated from a blend of the words wiki and encyclopedia. [23] [24] Its integral policy of "neutral point-of-view" [W 7] was codified in its first few months.

  5. List of academic databases and search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_academic_databases...

    The main academic full-text databases are open archives or link-resolution services, although others operate under different models such as mirroring or hybrid publishers. . Such services typically provide access to full text and full-text search, but also metadata about items for which no full text is availa

  6. English orthography - Wikipedia

    en.wikipedia.org/wiki/English_orthography

    e. English orthography comprises the set of rules used when writing the English language, [1][2] allowing readers and writers to associate written graphemes with the sounds of spoken English, as well as other features of the language. [3] English's orthography includes norms for spelling, hyphenation, capitalisation, word breaks, emphasis, and ...

  7. Geography - Wikipedia

    en.wikipedia.org/wiki/Geography

    Geography (from Ancient Greek γεωγραφία geōgraphía; combining gê 'Earth' and gráphō 'write') is the study of the lands, features, inhabitants, and phenomena of Earth. [1] Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities —not merely where objects are, but also ...

  8. Shulba Sutras - Wikipedia

    en.wikipedia.org/wiki/Shulba_Sutras

    1.9. The diagonal of a square produces double the area [of the square]. [...] 1.12. The areas [of the squares] produced separately by the lengths of the breadth of a rectangle together equal the area [of the square] produced by the diagonal. 1.13. This is observed in rectangles having sides 3 and 4, 12 and 5, 15 and 8, 7 and 24, 12 and 35, 15 ...

  9. Bohr–Sommerfeld model - Wikipedia

    en.wikipedia.org/wiki/Bohr–Sommerfeld_model

    The Bohr–Sommerfeld model (also known as the Sommerfeld model or Bohr–Sommerfeld theory) was an extension of the Bohr model to allow elliptical orbits of electrons around an atomic nucleus. Bohr–Sommerfeld theory is named after Danish physicist Niels Bohr and German physicist Arnold Sommerfeld. Sommerfeld argued that if electronic orbits ...