(Encyclopedia) object-oriented programming, a modular approach to computer program (software) design. Each module, or object, combines data and procedures (sequences of instructions) that act on the…
Sources: NASA and Massachusetts Institute of Technology. A new tool to help scientists, the media, and the public assess the potential danger of asteroids…
(Encyclopedia) Milne, David, 1882–1953, Canadian painter, b. Ontario. He grew up in Canada and came to the United States in 1903, living for 13 years in New York City, where he studied at the Art…
(Encyclopedia) Yersin, Alexandre Émile JeanYersin, Alexandre Émile JeanälĕksäNˈdrə āmēlˈ zhän yĕrsăNˈ [key], 1863–1943, French bacteriologist, of Swiss descent. He studied with Pasteur and worked on…
(Encyclopedia) Woolman, John, 1720–72, American Quaker leader, b. near Mt. Holly, N.J. Originally a tailor and shopkeeper, Woolman was recorded a minister (1743) by the Burlington, N.J., Meeting.…
IsometriesGeometryTransformationsIsometriesDilationsSymmetry The word isometry is used to describe the process of moving a geometric object from one place to another without changing its size or…
Timeline of Kennedy Tragedies
by Beth Rowen
Read about the many tragedies that have struck the Kennedy family, including John Kennedy's assassination and the death of John F. Kennedy Jr…
The United States is home to roughly 40% of the world's billionaires. About 10% of America's richest citizens have committed to participate in the Giving Pledge and donate at least 50% of their…
Lincoln, Abraham (president of U.S.): Shot April 14, 1865, in Washington, DC, by John Wilkes Booth; died April 15.Seward, William H. (secretary of state): Escaped assassination (though injured)…
