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Famous Trains: The Americas
by Mike Rozett Peruvian Central Railway 1895 The Peruvian Central Railway is an engineering marvel. It originates in Callao then climbs more than 13,000 feet to cross the…SETI@home
Search for extraterrestrials with your desktop computer by Gerry Brown Related Links History of SETIRadio AstronomyArecibo ObservatoryEncyclopedia: SETIA teraflop is a measure of a computer's…Current Events This Week: January 2023
Top of Page World News | US News | Disaster News | Science & Technology News It's a busy world out there, so that’s why we’ve boiled it all down to our top stories for each week of January,…Gibbons v. Ogden (1824)
Historical BackgroundThe McCulloch v. Maryland decision in 1819 fanned the flames of controversy over States' rights and national supremacy. By 1824, Chief Justice John Marshall had reached…Mining Engineer
Larry Turner Tell us about your work---what do you do? I am a mine manager in Nevada. I am responsible for all mining operations in the…Evaluating Expressions
Evaluating Expressions Algebra Encountering Expressions Introducing Variables Translating Words into Math Behold the Power of Exponents Living Large with Scientific Notation Dastardly…atomic clock
(Encyclopedia) atomic clock, electric or electronic timekeeping device that is controlled by atomic or molecular oscillations. A timekeeping device must contain or be connected to some apparatus that…nationalization
(Encyclopedia) nationalization, acquisition and operation by a country of business enterprises formerly owned and operated by private individuals or corporations. State or local authorities have…Liaoning
(Encyclopedia) LiaoningLiaoninglyouˈnĭngˈ [key], province (2010 pop. 43,746,323), c.58,400 sq mi (151,295 sq km), NE China, on the Bohai and Korea Bay. The capital is Shenyang (Mukden). A part of…decimal system
(Encyclopedia) decimal system [Lat.,=of tenths], numeration system based on powers of 10. A number is written as a row of digits, with each position in the row corresponding to a certain power of 10…Trending
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