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red shift

(Encyclopedia)red shift or redshift, in astronomy, the systematic displacement of individual lines in the spectrum of a celestial object toward the red, or longer wavelength, end of the visible spectrum. The effect...

red snapper

(Encyclopedia)red snapper: see snapper.

red spider

(Encyclopedia)red spider: see mite.

red spruce

(Encyclopedia)red spruce: see spruce.

red squill

(Encyclopedia)red squill: see squill.

red tide

(Encyclopedia)red tide: see Dinoflagellata.

Red Wing

(Encyclopedia)Red Wing, city (1990 pop. 15,134), seat of Goodhue co., SE Minn., on the Mississippi River at the head of Lake Pepin; inc. 1857. It is a commercial and manufacturing center in the Hiawatha valley farm...

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...

Conrad the Red

(Encyclopedia)Conrad the Red, d. 955, duke of Lotharingia (Lorraine; 944–53). A Franconian adherent of the German king Otto I (later Holy Roman emperor), he was made duke of Lotharingia and married Otto's daughte...

Eric the Red

(Encyclopedia)Eric the Red, fl. 10th cent., Norse chieftain, discoverer and colonizer of Greenland according to the sagas. He left (c.950) Norway with his exiled father and settled in Iceland. A feud resulting in m...