Geological TimeTheories of the UniverseCracks in a Newtonian WorldFaster Than a Speeding Light WaveIt All Depends on Your PositionThe Relative Nature of Space and TimeGeological TimeHow Can You Be in…
Learn about the heroes of the American civil rights movement, including Rosa Parks, Martin Luther King, Jr., Thurgood Marshall, and more.
by Borgna Brunner Rosa Parks,…
(Encyclopedia)
CE5
Electrical and radio symbols
electricity, class of phenomena arising from the existence of charge. The basic unit of charge is that on the proton or electron—the proton's…
(Encyclopedia) Jewish liturgical music, the music used in the religious services of the Jews.
The Bible and the Talmud record that spontaneous music making was common among the ancient Jews on all…
(Encyclopedia) satire, term applied to any work of literature or art whose objective is ridicule. It is more easily recognized than defined. From ancient times satirists have shared a common aim: to…
Here are the key news events of the month organized into three categories: World News, U.S. News, and Business, Society, and Science News. World | Nation | Business/…
Taney Court, 1837 to 1864The Supreme CourtEbbs and Flows of Court LeadershipTaney Court, 1837 to 1864Chase Court, 1864 to 1873Waite Court, 1874 to 1888Fuller Court, 1888 to 1910White Court,…
Day-to-day news from Athens by Shmuel Ross and Erin Teare Martin Sunday, August 29 Highlights of the Day A man with a history of disrupting sporting events runs onto the marathon…
(Encyclopedia)
CE5
Cross section of heart, with arrows indicating direction of blood flow
heart, muscular organ that pumps blood to all parts of the body. The rhythmic beating of the heart is a…
