(Encyclopedia) antiparticle, elementary particle corresponding to an ordinary particle such as the proton, neutron, or electron, but having the opposite electrical charge and magnetic moment. Every…
(Encyclopedia) aerodynamics, study of gases in motion. As the principal application of aerodynamics is the design of aircraft, air is the gas with which the science is most concerned. Although…
(Encyclopedia) French and Indian Wars, 1689–1763, the name given by American historians to the North American colonial wars between Great Britain and France in the late 17th and the 18th cent. They…
Biographies of U.S. representatives and senators from Pennsylvania Member Name Birth-Death ACHESON, Ernest Francis 1855-1917 ACKER, Ephraim Leister 1827-1903…
Get ready for the onslaught of summer movies with this guide. Look for the box of popcorn icon next to movies that are kid friendly.
By Jennie Wood Related Links Fandango Official…
(Encyclopedia) balloon, lighter-than-air craft without a propulsion system, lifted by inflation of one or more containers with a gas lighter than air or with heated air. During flight, altitude may…
(Encyclopedia) prison, place of confinement for the punishment and rehabilitation of criminals. By the end of the 18th cent. imprisonment was the chief mode of punishment for all but capital crimes.…
(Encyclopedia) Taft, William Howard, 1857–1930, 27th President of the United States (1909–13) and 10th chief justice of the United States (1921–30), b. Cincinnati.
Taft retired from public life…
