Jump to content

Wikipedia:Main Page alternatives/(encyclopedia)

From Wikipedia, the free encyclopedia
6,951,654 articles in English
Lise Meitner

Lise Meitner (1878–1968) was an Austrian-Swedish nuclear physicist who was instrumental in the discovery of nuclear fission and protactinium. In 1905, she became the second woman from the University of Vienna to earn a doctorate in physics. She spent much of her scientific career at the Kaiser Wilhelm Institute for Chemistry in Berlin. In 1938 she fled Nazi Germany and moved to Sweden. That year, chemists Otto Hahn and Fritz Strassmann demonstrated that isotopes of barium could be formed by neutron bombardment of uranium. Meitner and her nephew Otto Robert Frisch correctly interpreted their results and worked out the physics of this process, which they named "fission". The discovery led to the development of atomic bombs and nuclear reactors during World War II. Meitner did not share the 1944 Nobel Prize in Chemistry for the discovery of fission, which was awarded to Hahn alone, but she received many other honours, including the posthumous naming of element 109 as meitnerium in 1997. (Full article...)

Recently featured:

The Lost World is a 1925 American silent fantasy giant monster adventure film, directed by Harry O. Hoyt and written by Marion Fairfax, adapted from Arthur Conan Doyle's 1912 novel of the same name. The film's premiere was at the Astor Theatre in New York City on February 8, 1925.

Directed by Harry O. Hoyt

Recently featured: The BeatlesOrange-lined triggerfishSojourner Truth

Coat of arms of Louis Malet de Graville
Coat of arms of Louis Malet de Graville
 
Aga Khan IV in 2015
Aga Khan IV

February 8: Feast day of Saint Josephine Bakhita (Catholicism); Military Foundation Day in North Korea (1948)

South Carolina Highway Patrolmen before the Orangeburg Massacre
South Carolina Highway Patrolmen before the Orangeburg Massacre
More anniversaries:

About Wikipedia

  • Help — A general help directory about anything and everything Wikipedia
    • Questions — An outline of where to ask which questions
    • Help desk — Ask volunteers questions about using Wikipedia
  • Navigation — An explanation of wikilinks and other methods of navigating the site
  • Search — A help page about how to effectively search for articles
  • Editing — An explanation of how to edit articles
  • Current projects — On-going projects on which editors are currently focusing
  • Reference desk — Ask volunteers encyclopaedic questions about many different subjects
  • Mobile access — An explanation of how to access Wikipedia from a mobile device
  • Contact us — Information about how to contact Wikipedia

Wikimedia Foundation

Wikipedia is made possible by the Wikimedia Foundation, a non-profit organization that hosts a range of projects coordinated by volunteers at Meta-Wiki. The largest projects are shown below:

Wikipedia Wikipedia
Encyclopedia
Wiktionary Wiktionary
Dictionary & thesaurus
Wikibooks Wikibooks
Textbooks & manuals
Wikiquote Wikiquote
Quotations
Commons Commons
Free media
Wikinews Wikinews
News
Wikiversity Wikiversity
Learning tools
Wikisource Wikisource
Source texts
Wikispecies Wikispecies
Species directory

Each project is available in multiple languages. This is the English Wikipedia, which is one of more than 250 Wikipedias currently available. Interlanguage links, appearing in the left column by default, are used to connect a page on the English Wikipedia to other Wikipedias' pages on the same subject. If an article exists in another Wikipedia but not here in English, you can visit the Translation Department for information about requesting translations or translating articles yourself.