Jump to content

Wikipedia:Main Page/Temp10

From Wikipedia, the free encyclopedia

Welcome to Wikipedia, a multilingual, free-content encyclopedia. We started in January 2001 and are now working on 6,951,439 articles in the English version. To learn how you can edit any article right now, visit the Community Main Page or experiment in the sandbox.

Press release: Wikipedia publishes 500,000 articles in 50 languages

Features

Featured article

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:

Selected anniversaries

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:

In the news

Aga Khan IV in 2015
Aga Khan IV

Did you know...

Coat of arms of Louis Malet de Graville
Coat of arms of Louis Malet de Graville


Encyclopedia

Mathematical and Natural Sciences

Astronomy | Biology | Chemistry | Computer science | Earth science | Ecology | Health science | Mathematics | Physics | Statistics

Applied Arts and Sciences

Agriculture | Architecture | Business | Communication | Education | Engineering | Family & consumer science | Finance | Government | Law | Library & information science | Marketing | Medicine | Politics | Public affairs | Software engineering | Technology | Transport

Social Sciences and Philosophy

Anthropology | Archaeology | Economics | Geography | History | History of science and technology | Linguistics | Mythology | Philosophy | Political science | Psychology |Sociology

Culture and Fine Arts

Classics | Cuisine | Dance | Entertainment | Film | Games | Gardening | Handicraft | Hobbies | Holidays | Internet | Literature | Music | Opera | Painting | Poetry | Radio | Recreation | Religion | Sculpture | Sports | Television | Theater | Tourism | Visual arts and design

Other Category Schemes

Category schemes | Alphabetical order | Categories | Academic disciplines | Historical timeline | Themed timelines | Calendar | Reference tables | Biographies | Countries | How-tos

Wikipedia in other languages

Wikipedia language list - Afrikaans - ‮العربية ‬ (Araby) - Bahasa Indonesia - Bahasa Melayu - Bosanski - Български (Bulgarian) - Català - Česká - Corsu - Cymraeg - Dansk - Deutsch - Eesti - Español - Ελληνικά - Esperanto - Euskara - فارسی (Persian) - Français - Frysk - Galego - 한국어 (Hangukeo) - עברית (Hebrew) - हिन्दी (Hindi) - Hrvatski - Interlingua - Italiano - Kurdî - Latina - Latviešu - Lietuvių - Magyar - Maori - Nahuatl - Nederlands - 日本語 (Nihongo) - Norsk - Occitan - Plattdüütsch - Polski - Português - Română - Русский (Russkiy) - Shqip - Simple English - Slovensko - Српски (Srpski) - Suomeksi - Svenska - தமிழ் (Tamil) - Tiếng Việt - Türkçe - 中文 (简) - 中文 (繁) - Start a new edition

Sister Projects

Wiktionary - Wikibooks - Wikiquote - Wikisource - Meta-Wikipedia - 9-11 Memorial