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Patents #1–#50. U.S. patent 334,823 - Commutator for Dynamo Electric Machines - 1886 January 26 - Elements to prevent sparking on dynamo-electric machines; Drum-style with brushes. U.S. patent 335,786 - Electric Arc lamp - 1886 February 9 - Arc lamp with carbon electrodes controlled by electromagnets or solenoids and a clutch mechanism ...
Textbooks written in Pashto distributed to Afghan school children. A textbook is a book containing a comprehensive compilation of content in a branch of study with the intention of explaining it. Textbooks are produced to meet the needs of educators, usually at educational institutions. Schoolbooks are textbooks and other books used in schools.
Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.
Various collaborative online encyclopedias were attempted before the start of Wikipedia, but with limited success. [19] Wikipedia began as a complementary project for Nupedia, a free online English-language encyclopedia project whose articles were written by experts and reviewed under a formal process. [20]
Orgasm gap. The orgasm gap or pleasure gap is the disparity in sexual satisfaction —specifically the unequal frequency in achieving orgasm during sexual encounters—between heterosexual men and women. Across every demographic that has been studied, women report the lowest frequency of reaching orgasm during sexual encounters with men.
The Barkentine Linnet, a ship built in Chittagong, off the coast of Hong Kong circa 1890. The British East India Company, that took complete control of Bengal in 1793 by abolishing Nizamat (local rule), chose to develop Calcutta, now the capital city of West Bengal, as their commercial and administrative center for the Company-held territories in South Asia. [69]
The splendid fairywren ( Malurus splendens) is a passerine bird in the Australasian wren family, Maluridae. It is found across much of the Australian continent from central-western New South Wales and southwestern Queensland over to coastal Western Australia. It inhabits predominantly arid and semi-arid regions.
Gap, Hautes-Alpes. 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km 2 (0.386 sq mi or 247 acres) and river estuaries. Gap ( French pronunciation: [ɡap], Occitan: [ˈɡap]) is the prefecture of the department of Hautes-Alpes, in the region of Provence-Alpes-Côte d'Azur, Southeastern France.