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Theories of the Universe: Bohr's Atomic Theory

Bohr's Atomic TheoryTheories of the UniverseThat Old Quantum TheoryPlanck's ConstantPhotoelectric Effect Explained, the Quantum Strikes AgainBohr's Atomic Theory Neils Bohr is considered the…

Interview: Edward Ball on Slaves in the Family

"A Work in Progress" What do you feel your obligation is, to the people that you don't know, that you haven't a history with— the descendants of black slaves. What do you owe them? Here's…

Rhoecus

(Encyclopedia) RhoecusRhoecusrēˈkəs [key] Gr. Rhoikos, fl. 6th cent. b.c., Greek sculptor of Samos. He and Theodorus, another Samian, are said to have introduced better methods of casting bronze for…

Advanced-Level Science Projects: Botany

BotanyAdvanced-Level Science ProjectsBotanyHow Close to a Plant Must Pesticides Be in Order to Be Beneficial?Can Healthy Plants Be Grown in Soil Containing No Microorganisms? Can Cloning Make a…

NBA Draft 1999

  Will this year's NBA draft put the wind back in ailing teams' sails?   by Gerry Brown   Nothing, save Michael Jordan coming out of retirement, can change an NBA team's fortunes…

International Trade: Arguments Against Free Trade

Arguments Against Free TradeInternational TradeIntroductionExports, Imports—Why Bother?The Argument for Free TradeArguments Against Free TradeBarriers to International TradeInternational Trade…

allegiance

(Encyclopedia) allegiance, in political terms, the tie that binds an individual to another individual or institution. The term usually refers to a person's legal obligation of obedience to a…