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Hall effect

(Encyclopedia)Hall effect, experiment that shows the sign of the charge carriers in a conductor. In 1879 E. H. Hall discovered that when he placed a metal strip carrying a current in a magnetic field, a voltage dif...

Oberth, Hermann Julius

(Encyclopedia)Oberth, Hermann Julius, 1894–1989, Austro-German astronautical pioneer, b. Hermannstadt, Austria-Hungary (now Sibiu, Romania). Beginning his studies in astronautics before World War I, he first prop...

Lenau, Nikolaus

(Encyclopedia)Lenau, Nikolaus nēmpsh ādˈlər fən shtrāˈlənou [key], 1802–50, Austrian romantic poet, b. Hungary. He is considered Austria's chief lyric poet. Pessimism and melancholy dominate his work, whi...

Tristram and Isolde

(Encyclopedia)Tristram and Isolde trĭsˈtrəm, ĭsōlˈdə, ĭzōlˈ– [key], medieval romance. The earliest extant version (incomplete) was written (c.1185) by Thomas of Britain in Anglo-Norman French verse. Abo...

Otto, Austrian archduke

(Encyclopedia)Otto: see Hapsburg, Otto von.

Siebold, Philipp Franz van

(Encyclopedia)Siebold, Philipp Franz van fēˈlĭp fränts fen zēˈbôlt [key], 1796–1866, German naturalist and physician; son of A. E. von Siebold. He was noted for his studies of the natural history, ethnogra...

Mayröcker, Friederike

(Encyclopedia) Mayröcker, Friederike, 1924-2021, German-language poet, b. Vienna, Austria. Mayröcker served in World War II as a secretary in the German airforce a...

rococo, in music

(Encyclopedia)rococo, in music, 18th-century reaction against the baroque style. Less formal and grandiose in structure, it was a graceful rather than a profound style, more hedonistic than venturesome. Extreme man...

Hoppner, John

(Encyclopedia)Hoppner, John, 1758–1810, English portrait painter. He was a protégé of George III, whose illegitimate son he was rumored to be. He imitated, without total success, the style of Sir Joshua Reynold...

Caroline of Brunswick

(Encyclopedia)Caroline of Brunswick, 1768–1821, consort of George IV of England. The daughter of Charles William Ferdinand, duke of Brunswick, she married George (then prince of Wales) in 1795. She bore him one d...