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Koch, Edward Irving

(Encyclopedia)Koch, Edward Irving kŏch [key], 1924–2013, U.S. politician, mayor of New York City (1977–89), b. New York City. After receiving his law degree (New York Univ., 1948), he practiced as a lawyer, be...

Poitier, Sir Sidney

(Encyclopedia)Poitier, Sir Sidney, 1927–2022, Bahamian-American actor, b. Miami, raised in the Bahamas, returned to the United States at 14. Poitier served in the 1...

photochemistry

(Encyclopedia)photochemistry, study of chemical processes that are accompanied by or catalyzed by the emission or absorption of visible light or ultraviolet radiation. A molecule in its ground (unexcited) state can...

Poroshenko, Petro Oleksiyovych

(Encyclopedia)Poroshenko, Petro Oleksiyovych pĕtrôˈ ôlĕksēˈyôvĭch pôrôshĕnˈkô [key], 1965–, Ukrainian political leader and businessman. He studied economics at Kiev State Univ. (grad. 1989) and went...

Agee, James

(Encyclopedia)Agee, James āˈjē [key], 1909–55, American writer, b. Knoxville, Tenn., grad. Harvard, 1932. He soon joined the literary and journalistic life of New York City, becoming (1932) a writer for Fortun...

Buckley, William Frank, Jr.

(Encyclopedia)Buckley, William Frank, Jr., 1925–2008, American editor, author, and lecturer, b. New York City, grad. Yale, 1946. A popular, eloquent, and witty spokesman for the conservative point of view, Buckle...

Bradbury, Ray

(Encyclopedia)Bradbury, Ray (Raymond Douglas Bradbury) brădˈbĕrˌē, –bərē [key], 1920–2012, American writer, b. Waukegan, Ill. A popular and prolific writer of science fiction who did much to bring the ge...

capacitor

(Encyclopedia)capacitor or condenser, device for the storage of electric charge. Simple capacitors consist of two plates made of an electrically conducting material (e.g., a metal) and separated by a nonconducting ...

Wilder, Laura Elizabeth Ingalls

(Encyclopedia)Wilder, Laura Elizabeth Ingalls, 1867–1957, American author of the classic Little House series of children's books, b. Pepin, Wis. She and her pioneer family traveled (1869–79) throughout the Midw...

Ward, Douglas Turner

(Encyclopedia) Ward, Douglas Turner, 1930-2021, African-American actor, director, and playwright, b. Burnside, La., as Roosevelt Ward Jr. Ward’s family ...