Columbia Encyclopedia

(Encyclopedia) Heydrich, Reinhard rīnˈhärt hīˈdrĭkh [key], 1904–42, German police official under the Nazi regime. Forced to resign (1931) from the navy for misconduct, Heydrich joined the SS (see National So...

(Encyclopedia) scanning tunneling microscope (STM), device for studying and imaging individual atoms on the surfaces of materials. The instrument was invented in the early 1980s by Gerd Binnig and Heinrich Rohrer, w...

(Encyclopedia) strontium strŏnˈshēəm [key] [from Strontian, a Scottish town], a metallic chemical element; symbol Sr; at. no. 38; at. wt. 87.62; m.p. 769℃; b.p. 1,384℃; sp. gr. 2.6 at 20℃; valence +2. Stro...

(Encyclopedia) John I, 1350–95, king of Aragón and count of Barcelona (1387–95), son and successor of Peter IV. During his reign Aragón lost (1388) the duchy of Athens. An enthusiastic patron of learning and a...

(Encyclopedia) Düsseldorf düsˈəldôrf [key], city, capital of North Rhine–Westphalia, W Germany, at the ...

(Encyclopedia) Colonna kōlônˈnä [key], noble Roman family that played a leading part in the history of Rome from the 12th to the 16th cent. They were hereditary enemies of the Orsini and Caetani families, genera...

(Encyclopedia) Logau, Friedrich, Freiherr von frēˈdrĭkh frīˈhĕr fən lōˈgou [key], 1604–55, German poet, b. Silesia. Influenced by Martin Opitz, Logau wrote epigrams in the contemporary fashion, bringing a...

(Encyclopedia) Maipú mīpo͞oˈ [key], battlefield, central Chile, a few miles S of Santiago. On Apr. 5, 1818, San Martín routed the Spanish royalist army at Maipú and assured Chilean independence. The victory ma...

(Encyclopedia) O'Higgins, Bernardo ōēˈgēns [key], 1778–1842, South American revolutionary and ruler (1817–23) of Chile; illegitimate son of Ambrosio O'Higgins. He was chosen in 1813 to replace José Miguel ...

(Encyclopedia) Dion, Stéphane stāfänˈ dyôn [key], 1955–, Canadian politician, b. Quebec, grad. Laval Univ., Quebec (B.A. 1977, M.A. 1979), Institut d'études politiques, Paris. A political science professor a...