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Ekelund, Vilhelm

(Encyclopedia)Ekelund, Vilhelm vĭlˈəlm āˈkəlŭndˌ [key], 1880–1949, Swedish essayist and poet. Ekelund's writings were influenced by the works of Nietzsche, Hölderlin, and Swedenborg. After publication of...

Brannan, Samuel

(Encyclopedia)Brannan, Samuel, 1819–89, California pioneer, b. Saco, Maine. Converted to Mormonism, he edited a Mormon paper in New York City before leading a party of Mormons by sea from New York to California. ...

Pacino, Al

(Encyclopedia)Pacino, Al (Alberto Pacino) pəchēˈnō [key], 1940–, American actor, b. New York City, studied at the Herbert Berghof Studio and the Actors Studio, New York City. Known for his intense, finely tun...

altitude

(Encyclopedia)altitude, vertical distance of an object above some datum plane, such as mean sea level or a reference point on the earth's surface. It is usually measured by the reduction in atmospheric pressure wit...

sand dollar

(Encyclopedia)sand dollar, common name for a marine animal in the same phylum as the starfish (see sea star). The sand dollar has a rigid, flattened, disk-shaped test, or shell, made of firmly united plates lying j...

aberration of starlight

(Encyclopedia)aberration of starlight, displacement of the apparent path of light from a star, resulting in a displacement of the apparent position of the star from its true position; discovered by the English astr...

color index

(Encyclopedia)color index, in astronomy, difference in an object's brightness as recorded between any two well-defined bands of the electromagnetic spectrum by using optical filters of different colors. If blue and...

stellar structure

(Encyclopedia)stellar structure, physical properties of a star and the processes taking place within it. Except for that of the sun, astronomers must draw their conclusions regarding stellar structure on the basis ...

parallax

(Encyclopedia)CE5 The trigonometric parallax of a star, expressed by the angle θ, is a measure of its apparent motion against the background of more distant stars as a result of the earth's motions in its orbit...

Fomalhaut

(Encyclopedia)Fomalhaut fōˈməlhôtˌ [key], brightest star in the constellation Piscis Austrinus (southern fish); Bayer designation Alpha Piscis Austrini; 1992 position R.A. 22h57.3m, Dec. −29°39′. A white,...