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Orion, in astronomy

(Encyclopedia)Orion, in astronomy, constellation located on the celestial equator. It is one of the most conspicuous and easily recognizable constellations in the entire sky. From ancient times it has been mentione...

Stafford, Henry, 2d duke of Buckingham

(Encyclopedia)Stafford, Henry, 2d duke of Buckingham, 1454?–1483, English nobleman. He was the grandson of Humphrey Stafford, the 1st duke, whom he succeeded in 1460. He passed the death sentence on George, duke ...

spectral class

(Encyclopedia)CE5 spectral class, in astronomy, a classification of the stars by their spectrum and luminosity. In 1885, E. C. Pickering began the first extensive attempt to classify the stars spectroscopically....

Edward V

(Encyclopedia)Edward V, 1470–83?, king of England (1483), elder son of Edward IV and Elizabeth Woodville. His father's death (1483) left the boy king the pawn of the conflicting ambitions of his paternal uncle, t...

Westmorland, Ralph Neville, 1st earl of

(Encyclopedia)Westmorland, Ralph Neville, 1st earl of, 1364–1425, English nobleman. His family was one of the most powerful in England and shared domination of the northern counties with the Percy family, with wh...

Max, Peter

(Encyclopedia)Max, Peter, 1937–, American artist, b. Berlin. Max is noted for his undulating graphic designs in bright, vibrating colors. His style has influenced much commercial art. It is reminiscent of art nou...

Paris green

(Encyclopedia)Paris green, also called Schweinfurt green, an extremely poisonous, bright green powder that was formerly used extensively as a pigment (e.g., in wallpaper) and that is sometimes used as an insecticid...

Cœur de Lion

(Encyclopedia)Cœur de Lion: see Richard I, king of England. ...

Welsbach mantle

(Encyclopedia)Welsbach mantle or Welsbach burner [for C. A. von Welsbach], cylindrical framework of gauze impregnated with oxides of thorium and cerium. When heated in a gas flame, it produces a very bright light b...

powder

(Encyclopedia)powder, any mass of fine particles or dust prepared by various mechanical means, e.g., grinding of solid substances, or by chemical means, e.g., precipitation from solutions. In a special sense, the w...