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Bürgi, Joost

(Encyclopedia)Bürgi, Joost or Jost, 1552–1632, Swiss mathematician and instrument maker. As the official clockmaker (1579–92) to Duke Wilhelm IV of Hesse-Kassell, he developed the first clock with a minute han...

Henry IV, Holy Roman emperor and German king

(Encyclopedia)Henry IV, 1050–1106, Holy Roman emperor (1084–1105) and German king (1056–1105), son and successor of Henry III. He was the central figure in the opening stages of the long struggle between the ...

Michel, Hartmut

(Encyclopedia)Michel, Hartmut mĭkhˈəl [key], 1948–, German biochemist, Ph.D. Univ. of Würzburg, 1977. Michel was the first person to reduce a photosynthetic action center, which is a four-protein complex, to ...

Frescobaldi, Girolamo

(Encyclopedia)Frescobaldi, Girolamo jērôˈlämō frāskōbälˈdē [key], 1583–1643, Italian organist and composer. He became organist at St. Peter's in Rome in 1608, where huge crowds came during most of his l...

Zimmermann note

(Encyclopedia)Zimmermann note, secret telegram sent on Jan. 16, 1917, by German foreign secretary Arthur Zimmermann to Count Johann von Bernstorff, the German ambassador to the United States. In it Zimmermann said ...

sulfuric acid

(Encyclopedia)sulfuric acid, chemical compound, H2SO4, colorless, odorless, extremely corrosive, oily liquid. It is sometimes called oil of vitriol. Although sulfuric acid is now one of the most widely used c...

Moscheles, Ignaz

(Encyclopedia)Moscheles, Ignaz ĭgˈnäts mōshˈəlĕs [key], 1794–1870, Bohemian-German musician. Born in Prague, Moscheles was a child prodigy. He studied in Vienna with Johann Albrechtsberger and Antonio Sali...

Quinet, Edgar

(Encyclopedia)Quinet, Edgar ĕdgärˈ kēnāˈ [key], 1803–75, French historian. A romantic nationalist, he was much influenced by Johann Gottfried von Herder and was a close friend and associate of Jules Michele...

Stendal

(Encyclopedia)Stendal shtĕnˈdäl [key], city (1994 pop. 47,252), Saxony-Anhalt, N central Germany, on the Uchte River. It is a major rail junction and has sugar refineries, metalworks, food canneries, and chemica...

Louis, Murray

(Encyclopedia)Louis, Murray, 1926–2016, American modern dancer and choreographer, b. Brooklyn, N.Y., as Murray Louis Fuchs. He served in naval intelligence in San Francisco during World War II, then stayed in the...