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virtual observatory

(Encyclopedia)virtual observatory, a collection of integrated astronomical data archives and software tools that utilize computer networks to create an environment in which research can be conducted. Several countr...

Williams, Hank

(Encyclopedia)Williams, Hank, 1923–53, American country singer and songwriter, b. near Georgiana, Ala., as Hiram Williams. He is widely regarded as the leading figure in the history of country music (see country ...

Trudeau, Justin Pierre James

(Encyclopedia)Trudeau, Justin Pierre James tro͞odōˈ [key], 1971–, Canadian politician, b. Ottawa; grad. McGill Univ. (B.A., 1994), Univ. of British Columbia (B.Ed., 1998), son of Pierre Trudeau. He briefly tau...

Purcell, Edward Mills

(Encyclopedia)Purcell, Edward Mills, 1912–97, American physicist, b. Taylorville, Ill., Ph.D. Harvard, 1938. During World War II, Purcell was a researcher at the Massachusetts Institute of Technology Radiation La...

Stephens, James

(Encyclopedia)Stephens, James, 1882–1950, Irish poet and fiction writer, b. Dublin. One of the leading figures of the Irish literary renaissance, Stephens is best known for his fanciful and highly colored prose w...

stereophonic sound

(Encyclopedia)stereophonic sound, sound recorded simultaneously through two or more electronic channels. For live recordings, microphones are placed in different positions relative to the sound source. The recorded...

Ripley, Robert LeRoy

(Encyclopedia)Ripley, Robert LeRoy, 1890–1949, American cartoonist, b. Santa Rosa, Calif., as Leroy Robert Ripley. The creator of the Believe It or Not! newspaper cartoon, Ripley began his career at 16 as a sport...

horizon

(Encyclopedia)horizon, in astronomy, roughly circular line bounding an observer's view of the surface of the earth where the sky and earth seem to meet. This is the visible horizon. At sea the visible horizon is a ...

Hamilton, Sir William Rowan

(Encyclopedia)Hamilton, Sir William Rowan, 1805–65, Irish mathematician and astronomer, b. Dublin. A child prodigy, he had mastered 13 languages by the age of 13 and was still an undergraduate when he became prof...

Helene

(Encyclopedia)Helene həlēnˈ, hĕlˈənə [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XII (or S12), Helene is an irregularly shaped (nonspherical) body meas...