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Copper (Cu)
copper metallic chemical element; symbol Cu [Lat. cuprum =copper]; at. no. 29; at. wt. 63.546; m.p. 1,083.4°C; b.p. 2,567°C; sp. gr. 8.96 at 20°C; valence +1 or +2. Copper and some of its alloys have been used by humanity since the Bronze Age . One of the first metals known to humans,... Read more |
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Babbitt metal
Babbitt metal an antifriction metal first produced by Isaac Babbitt in 1839. In present-day usage the term is applied to a whole class of silver-white bearing metals, or "white metals." These alloys usually consist of relatively hard crystals embedded in a softer matrix, a structure important... Read more |
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sapwood
sapwood relatively thin, youngest, outer part of the woody stem of a tree, the part that conducts water and dissolved materials. In the cross section of a tree, the sapwood is recognizable by its texture and color; it is softer and lighter than the inner heartwood . As the tree grows in diameter,... Read more |
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alkaline-earth metals
alkaline-earth metals metals constituting Group 2 of the periodic table . Generally, they are softer than most other metals, react readily with water (especially when heated), and are powerful reducing agents, but they are exceeded in each of these properties by the corresponding alkali metal.... Read more |
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chalk
chalk mineral of calcium carbonate , similar in composition to limestone, but softer. It is characteristically a marine formation and sometimes occurs in great thickness; the chief constituents of these chalk deposits are the shells of minute animals called foraminiferans . Chalk has been laid... Read more |
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Bryce Canyon National Park
Bryce Canyon National Park 35,835 acres (14,513 hectares), SW Utah; est. 1924. The Pink Cliffs of the Paunsaugunt Plateau, c.2,000 ft (610 m) high, were formed by water, frost, and wind action on alternate strata of softer and harder limestone; the result is colorful and unique erosional forms,... Read more |
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William Butterfield
William Butterfield 1814-1900, English Gothic-revival architect. Favored by the Ecclesiological Society for his Puginlike correctness in recalling Gothic forms, Butterfield rose to prominence in the middle of the 19th cent. The brilliant polychromy that he created through his combinations of brick,... Read more |
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silk
silk A material produced by the silk glands of spiders, some insects, and certain other invertebrates (e.g. centipedes). It is exuded as a liquid by a protruding appendage, the spinneret, but quickly hardens after leaving the gland. Silk is composed of α-keratin crystals embedded in a rubbery... Read more |
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soft-ground etching
soft-ground etching. A method of etching that produces prints characterized by softness of line or a grainy texture. The waxy ground used to coat the etching plate is softer and stickier than in normal etching (various recipes exist), so that it adheres to anything pressed into it. Over this ground... Read more |
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quarrying
quarrying open, or surface, excavation of rock used for various purposes, including construction, ornamentation, road building, and as an industrial raw material. Rock that has been quarried is commonly called stone. Quarrying methods depend chiefly on the desired size and shape of the stone and... Read more |
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SIR JOHN MAPS OUT THE FUTURE IN BLACK AND WHITE; EXCLUSIVE.
Byline: BOB CASS EIGHT years...hopes were all but destroyed by a...for Blackburn, Sir John's thoughts...scheming as he relaxed around the swimming...etched face of the 63-year-old businessman...sleeping giant but it has affected...as a big club. But the next ten years... |
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Pensions getting into bad company Accounting directive SSAP24 may sound...
...appreciably better. Bob Scott, a partner...accounts users. But he warns that the...of the Budget. But of the 63 that issued their...concludes that the relaxed approach has at...very thing that Sir David Tweedie and...the ASB abhor. But, of course, this... |
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Maris lives in old notes
...just an employer, but for the Marises...pounds as a player - but he was sinewy and...was affable and relaxed when I met with...were good guys. But I was done...was top-notch - Bob Gibson, Lou Brock...61, '62, '63, '64, '67 and...to Mantle." No sir. Maris was issued... |