Columbia Encyclopedia

(Encyclopedia) Sickingen, Franz von fränts fən zĭˈkĭngən [key], 1481–1523, German knight. Placed under the ban of the Holy Roman Empire because of his profitable forays along the Rhine, he served King Franci...

(Encyclopedia) Sills, Beverly, 1929–2007, American coloratura soprano, b. Brooklyn, N.Y., as Belle Silverman. Her childhood career as a radio singer (when she was first nicknamed “Bubbles”) led to voice studie...

(Encyclopedia) Sutter, John Augustus, 1803–80, American pioneer, b. Kandern, Baden, of Swiss parents. His original name was Johann August Suter. He emigrated to the United States in 1834, went to St. Louis, then t...

(Encyclopedia) Bachelet, Michele (Verónica Michele Bachelet Jeria) bĕōnˈēka mēchĕlˈ bächĕlĕtˈ herˈēä [key], 1951–, Chilean political leader and government official, president of Chile (2006–10, 20...

(Encyclopedia) Velasco, Luis de vāläsˈkō [key], d. 1564, Spanish administrator, second viceroy (1550–64) of New Spain (now Mexico), successor to Antonio de Mendoza. His rule was remarkably energetic, humanita...

(Encyclopedia) García Lorca, Federico fāᵺārēˈkō gärthēˈä lôrˈkä [key], 1898–1936, Spanish poet and dramatist, b. Fuente Vaqueros. The poetry, passion, and violence of his work and his own tragic and...

(Encyclopedia) Grünewald, Mathias mätēˈäs grünˈəvält [key], c.1475–1528, German painter of religious subjects. His original name was Mathis Gothart Neithart. Although he assimilated various compositional ...

(Encyclopedia) pi, in mathematics, the ratio of the circumference of a circle to its diameter. The symbol for pi is π. The ratio is the same for all circles and is approximately 3.1416. It is of great importance in...

(Encyclopedia) Bouillon, Henri de La Tour d'Auvergne, vicomte de Turenne, duc de dük də bo͞oyôNˈ [key], 1555–1623, marshal of France, diplomat, and Protestant leader. He served with Henry IV against the Cath...

(Encyclopedia) calculus of variations, branch of mathematics concerned with finding maximum or minimum conditions for a relationship between two or more variables that depends not only on the variables themselves, a...