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logic circuit

(Encyclopedia) logic circuit, electric circuit whose output depends upon the input in a way that can be expressed as a function in symbolic logic; it has one or more binary inputs (capable of…

health maintenance organization

(Encyclopedia) health maintenance organization (HMO), type of prepaid medical service in which members pay a monthly or yearly fee for all health care, including hospitalization. The term “health…

Thiebaud, Wayne

(Encyclopedia) Thiebaud, Wayne, 1920-2021, American artist, b. Mesa, Ariz., Sacramento State College (B.A., 1951; M.A., 1952). Thiebaud studied commercial art in high school, and during World…

space-time

(Encyclopedia) space-time, central concept in the theory of relativity that replaces the earlier concepts of space and time as separate absolute entities. In relativity one cannot uniquely…

Laird, Melvin Robert

(Encyclopedia) Laird, Melvin Robert, 1922–2016, American politician, U.S. secretary of defense (1969–73), b. Omaha, Nebr. After serving (1942–46) in the navy during World War II, he entered politics…

guardian and ward

(Encyclopedia) guardian and ward, in law. A guardian is someone who by appointment or by relationship has the care of a person or that person's property, or both. The protected individual, known as…

John III, king of Poland

(Encyclopedia) John III (John Sobieski)John IIIsôbyĕˈskē [key], 1624–96, king of Poland (1674–96), champion of Christian Europe against the Ottomans. Born to an ancient noble family, he was appointed…

living will

(Encyclopedia) living will or advance health care directive, legal document in which a person expresses in advance his or her wishes concerning the use of artificial life support and other medical…

digital art

(Encyclopedia) digital art, contemporary art in which computer technology is used in a wide variety of ways to make distinctive works. Digital art was pioneered in the 1970s but only came into its…

Styron, William

(Encyclopedia) Styron, William, 1925–2006, American novelist, b. Newport News, Va., grad. Duke, 1947. His fiction is often powerful, deeply felt, poetic, and elegiac. He became well known for his…