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Wikipedia: Diamond
This encyclopedia article provides a detailed overview of the diamond. Content includes a focus on this gemstone's physical properties, the industry that surrounds it, and its history and symbolism.
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Wikipedia: Conservation of Mass
This site from Wilkopedia defines the law of conservation of mass. Included are links to related topics and terms used in the definition.
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Wikipedia: Particle Physics
An in-depth encyclopedia article on particle physics. Discusses what encompasses the study of particle physics, gives a history of particle physics, briefly describes the Standard Model of particle physics, discusses the dispute that...
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Wikipedia: Geography of Nepal
Offers geographic facts about Nepal, including descriptions of terrain, land use, and natural hazards. Nepal contains eight of the world's ten highest peaks.
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Wikipedia: Oracle
This article explains what an oracle is and discusses some of the prominent oracles in classical Greece, primarily the one at the temple of Apollo in Delphi. Links are also provided for additional information.
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Wikipedia: Separation of Powers
Discusses what separation of powers is, what it looked like in the past, and how it is interpreted in countries around the world and in the United States.
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Wikipedia: Price Fixing
An encyclopedia article on price fixing discusses what it is, gives examples of different methods of price fixing, example of price fixing in international settings, and information about the allegations that the U.S. record industry...
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Wikipedia: Placenta
A brief but informative description of the placenta. Includes various links to further explain terminology used in the description.
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Wikipedia: Natural Number
Find out exactly what a natural number is and what some of the controversy is over the definition.
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Wikipedia: Democritus
This encyclopedia entry surveys the life and thought of the 5th century BCE Greek philosopher Democritus, who proposed the existence of the atom.
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Wikipedia: Additive Inverse
What is additive inverse? It means "opposite." Find out more about this concept in this detailed definition with examples and links to related terms.
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Wikipedia: Lend Lease
A summary of what the Lend-Lease Act was and how it played an important part in World War II.
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Wikipedia: Kamakura Shogunate
The Kamakura Shogunate was a feudal military dictatorship ruled by the shoguns of the Minamoto family from 1185 to 1333 AD. The article gives information on Minamoto no Yoritomo's proclamation as shogun of the Kamakura Dynasty, his wife...
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Wikipedia: Sewing Machine
A history of the sewing machine is given with a discussion of Elias Howe and the contributions of others to perfect and improve on the machine. Describes the types of stitches a sewing machine can do, and the social impact of the sewing...
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Wikipedia: Republic
This detailed article defines the term republic, discusses the characteristics of a republican government, examines significant republican governments throughout history, and looks at different types of republican governments in the...
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Wikipedia: Natural Monopoly
This entry offers a concise description of a natural monopoly, its history, how it occurs, and how it is regulated.