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ytterbium

(Encyclopedia)ytterbium ĭtûrˈbēəm [key] [for Ytterby, a town in Sweden], metallic chemical element; symbol Yb; at. no. 70; at. wt. 173.054; m.p. 819℃; b.p. about 1,194℃; sp. gr. about 7.0; valence +2 or +3...

Corvo, Baron

(Encyclopedia)Corvo, Baron: see Rolfe, Frederick William. ...

Baron, Michel

(Encyclopedia)Baron or Boyron, Michel mēshĕlˈ bärôNˈ or bwärôNˈ [key], 1653–1729, one of the first great French actors. A protégé of Molière, he acted at the Hôtel de Bourgogne and at the Comédie Fr...

Haydn, Michael

(Encyclopedia)Haydn, Michael hīˈdən [key], 1737–1806, Austrian composer, younger brother of Franz Joseph Haydn. Haydn, largely self-taught, was noted especially for his sacred music. He was a friend of Mozart...

Marschner, Heinrich August

(Encyclopedia)Marschner, Heinrich August hīnˈrĭkh ouˈgo͝ost märshˈnər [key], 1795–1861, German opera composer. Marschner's first opera, Heinrich IV und d'Aubigné, was produced by Carl Maria von Weber in ...

Siemens, Sir William

(Encyclopedia)Siemens, Sir William, 1823–83, English electrical engineer, b. Germany; brother of Ernst Werner von Siemens. Originally his name was Carl Wilhelm Siemens. After visiting England to introduce an elec...

Wrangell Mountains

(Encyclopedia)Wrangell Mountains, S Alaska, extending c.100 mi (160 km) SE from the Copper River to the Canadian border, where they meet the St. Elias Mts. Mt. Blackburn (16,523 ft/5,036 m) is the highest peak. The...

Milstein, Nathan

(Encyclopedia)Milstein, Nathan, 1904–92, Russian violinist, b. Odessa. Milstein attended the music school in Odessa before entering the St. Petersburg conservatory, where he studied under Leopold Auer. He toured ...

neodymium

(Encyclopedia)neodymium nēˌōdĭmˈēəm [key], metallic chemical element; symbol Nd; at. no. 60; at. wt. 144.242; m.p. about 1,021℃; b.p. about 3,068℃; sp. gr. 7.004 at 20℃; valence +3. Neodymium is a lust...

praseodymium

(Encyclopedia)praseodymium prāˌzēōdĭmˈēəm, –sēō– [key] [Gr., =green twin], metallic chemical element; symbol Pr; at. no. 59; at. wt. 140.90765; m.p. 931℃; b.p. 3,512℃; sp. gr. about 6.8; valence +...