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1840: John Herschel invents the blueprint. [422] 1841: Alexander Bain devises a printing telegraph. [423] 1842: William Robert Grove invents the first fuel cell. 1842: John Bennet Lawes invents superphosphate, the first man-made fertilizer. 1844: Friedrich Gottlob Keller and, independently, Charles Fenerty come up with the wood pulp method of ...
The Indus Valley script remains undeciphered and there are very little surviving fragments of its writing, thus any inference about scientific discoveries in that region must be made based only on archaeological digs. The following dates are approximations. The Nippur cubit-rod, c. 2650 BCE, in the Archeological Museum of Istanbul, Turkey
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Joseph Priestley's A New Chart of History, 1765 The bronze timeline "Fifteen meters of History" with background information board, Örebro, Sweden. A timeline is a list of events displayed in chronological order. [1]
Pin tumblers are most commonly employed in cylinder locks, but may also be found in tubular or radial locks. The earliest pin-tumble locks were made over 4,000 years ago by the Egyptians. But due to their large, cumbersome size and since they were made of wood, the locks were not practical to use. [104]
One partial term; died 2 years, 4 months, and 29 days into term 43: Zachary Taylor: 492 12th • March 4, 1849 – July 9, 1850 [c] One partial term; died 1 year, 4 months, and 5 days into term 44: James A. Garfield: 199 20th • March 4 – September 19, 1881 [c] Assassinated: died 6 months and 15 days into term; 79 days after being shot 45
Spain occupies the present day border town of Olivença since the War of the Oranges. 20 December 1999: Portuguese Overseas: De facto: Portuguese Macau transferred to the People's Republic of China: 20 May 2002: Portuguese Overseas: De jure: Portuguese Timor, occupied by Indonesia since 1975, officially dissolved to form the independent state ...
1838–1840: Civil war in the Federal Republic of Central America led to the foundings of Guatemala, El Salvador, Honduras, Nicaragua, and Costa Rica. 1838–1857: Chartism a working-class reform movement in Britain. By this time, 46,000 Native Americans have been forcibly relocated in the Trail of Tears.