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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...

Nuuk

(Encyclopedia)Nuuk gôtˈhôp [key], town (1996 pop. 12,882), Nuuk dist., W Greenland, on the Godthåbfjord. The largest town and capital of Greenland, it is the seat of the national council and of the supreme cour...

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 ...

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...

Brown, Jerry

(Encyclopedia)Brown, Jerry (Edmund Gerald Brown, Jr.), 1938–, American political leader, b. San Francisco. The son of Edmund Gerald (Pat) Brown (1905–96), governor of California (1959–67), Brown abandoned ear...

Mitchell, Maria

(Encyclopedia)Mitchell, Maria, 1818–89, American astronomer and educator, b. Nantucket, Mass. Mitchell taught school in Nantucket, and later became a librarian. On Oct. 1, 1847, Mitchell discovered a comet (1847 ...

luminosity

(Encyclopedia)luminosity, in astronomy, the rate at which energy of all types is radiated by an object in all directions. A star's luminosity depends on its size and its temperature, varying as the square of the ra...

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 ...