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Black Scientists & Inventors

Benjamin Banneker, Thomas Jennings, other exceptional scientists by Ann Marie Imbornoni Madame C.J. Walker Related Links Black History Month FeaturesAfrican American History…

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…

John F. Kennedy (January 30, 1961)

Mr. Speaker, Mr. Vice President, Members of the Congress: It is a pleasure to return from whence I came. You are among my oldest friends in Washington—and this House is my oldest home. It was here…

virtual reality

(Encyclopedia) virtual reality (VR) or virtual environment (VE), computer-generated environment with and within which people can interact. The advantage of VR is that it can immerse people in an…

Cardiff

(Encyclopedia) Cardiff Cardiff kärˈdĭf [key], Welsh Caerdydd, city and county (2020 est. pop.…

Windsor, town, England

(Encyclopedia) WindsorWindsorwĭnˈzər [key], town (1991 pop. 31,544), Windsor and Maidenhead, S central England, on the Thames River. There is some light industry and printing. The town is a popular…

lien

(Encyclopedia) lien, claim or charge held by one party, on property owned by a second party, as security for payment of some debt, obligation, or duty owed by that second party. A lien may arise by…

Alföld

(Encyclopedia) AlföldAlföldôlˈföld [key], Hun. Nagy-Alföld [Great Alföld], great central plain of Hungary extending into Serbia and W Romania. The level region is drained by the Tisza and Danube…