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rhenium

(Encyclopedia) rheniumrheniumrēˈnēəm [key], metallic chemical element; symbol Re; at. no. 75; at. wt. 186.207; m.p. about 3,180℃; b.p. about 5,625℃; sp. gr. 21.02 at 20℃; valence −1, +2, +3, +4, +5…

Wright brothers

(Encyclopedia) Wright brothers, American airplane inventors and aviation pioneers. Orville Wright 1871–1948, was born in Dayton, Ohio, and Wilbur Wright, 1867–1912, near New Castle, Ind. Their…

Fuller, Margaret

(Encyclopedia) Fuller, Margaret, 1810–50, American writer, lecturer, and public intellectual, b. Cambridgeport (now part of Cambridge), Mass. She was one of the most influential personalities in the…

Atlantic Hurricane Names

Because hurricanes often occur at the same time, officials assign short, distinctive names to the storms to avoid confusion among weather stations, coastal bases, and ships at sea. Since 1953…

Recent Science Discoveries, 2000

Audible Snowflakes and Other DiscoveriesMore science highlights discovered in 2000 by Otto Johnson More Discoveries IntroductionIce Age Haute CoutureAntisocial Brain…

vacuum

(Encyclopedia) vacuum, theoretically, space without matter in it. A perfect vacuum has never been obtained; the best human-generated vacuums contain less than 100,000 gas molecules per cc, compared…

Vermont

Capital: Montpelier State abbreviation/Postal code: Vt./VT Governor: Phillip Scott, R (to Jan. 2019 Lieut. Governor: David Zuckerman, P (to Jan. 2019) Senators: Patrick…

The Supreme Court: Punishing Students

Punishing StudentsThe Supreme CourtEducating Our KidsPunishing StudentsTesting for DrugsDealing with Sexual HarassmentLegalizing School Vouchers Schools always struggle with the issue of how…

Scientists: Physical Sciences

  Notable Scientists: Physical Sciences Astronomers, astrophysicists, chemists, and physicists     Jump to a category: AstronomersAstrophysicistsChemistsPhysicists…