Wikipedia:Main Page history/2018 January 22
From today's featured articleThe S-50 Project was the Manhattan Project's effort to produce enriched uranium by liquid thermal diffusion during World War II. The process was developed by Philip H. Abelson and other scientists at the United States Naval Research Laboratory, and was one of three technologies for uranium enrichment pursued by the Manhattan Project. Pilot plants were built at the Anacostia Naval Air Station and the Philadelphia Navy Yard. A facility at the Clinton Engineer Works in Oak Ridge, Tennessee, was the only production-scale liquid thermal diffusion plant ever built. It could not enrich uranium sufficiently for use in an atomic bomb, but it could begin the process of enrichment that was completed by the Y-12 calutrons and the K-25 gaseous diffusion plants. It sped up the production of enriched uranium for the Little Boy bomb used in the atomic bombing of Hiroshima. This plant ceased production in September 1945, but was reopened in May 1946, and used by the Nuclear Energy for the Propulsion of Aircraft project of the US Army Air Forces before being demolished in the late 1940s. (Full article...)
Recently featured:
Did you know...
|
In the news
On this day...January 22: Day of Unity of Ukraine in Ukraine (1919)
John Donne (b. 1572) · Gisela Januszewska (b. 1867) · Ali Hassan Salameh (d. 1979)
More anniversaries:
|
From today's featured list
The NWA World Middleweight Championship was a professional wrestling championship in the National Wrestling Alliance (NWA) between 1939 and 2010. For most of its existence, it was defended in the Mexican lucha libre promotion Consejo Mundial de Lucha Libre, who called it the Campeonato Mundial Peso Medio de NWA. The championship was created as the "World Middleweight Championship" in early 1939, by Salvador Lutteroth, owner of Empresa Mexicana de Lucha Libre. He awarded it to Gus Kallio, a five-time National Wrestling Association World Middleweight Champion, nicknamed "The King of the Middleweights" in the United States. When Octavio Gaona defeated Kallio on March 29, 1939, he won both middleweight championships. Since 1939 45 wrestlers have shared 84 NWA Middleweight Championship reigns. René Guajardo held the championship a record six times. (Full list...)
Today's featured picture
A 14th-century Korean hanging scroll in gold and color on silk depicting Kṣitigarbha, a bodhisattva primarily revered in East Asian Buddhism. He is usually shown as a Buddhist monk with a halo around his shaved head, a staff to force open the gates of hell, and a wish-fulfilling jewel to light up the darkness. In East Asian Buddhism, Kṣitigarbha is known for his vow to take responsibility for the instruction of all beings in the six worlds between the death of Gautama Buddha and the rise of Maitreya, as well as his vow not to achieve Buddhahood until all hells are emptied. He is therefore often regarded as the bodhisattva of hell-beings. Painting: Unknown (image courtesy of the Metropolitan Museum of Art)
Recently featured:
|
Other areas of Wikipedia
- Community portal – Bulletin board, projects, resources and activities covering a wide range of Wikipedia areas.
- Help desk – Ask questions about using Wikipedia.
- Local embassy – For Wikipedia-related communication in languages other than English.
- Reference desk – Serving as virtual librarians, Wikipedia volunteers tackle your questions on a wide range of subjects.
- Site news – Announcements, updates, articles and press releases on Wikipedia and the Wikimedia Foundation.
- Village pump – For discussions about Wikipedia itself, including areas for technical issues and policies.
Wikipedia's sister projects
Wikipedia is hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other projects:
Commons Free media repository |
MediaWiki Wiki software development |
Meta-Wiki Wikimedia project coordination |
|||
Wikibooks Free textbooks and manuals |
Wikidata Free knowledge base |
Wikinews Free-content news |
|||
Wikiquote Collection of quotations |
Wikisource Free-content library |
Wikispecies Directory of species |
|||
Wikiversity Free learning materials and activities |
Wikivoyage Free travel guide |
Wiktionary Dictionary and thesaurus |