例文・使い方で印象づける「cobalt」の覚え方
スポンサーリンク...With regard to theircomposition, chemical analysis has shown several of the blues to beoxide of copper with a small proportion of iron; none containing cobalt... 
George Field 「Field's Chromatography」
...Most serviceable landscape tints are afforded by admixture of rosemadder with cobalt, Indian red, purple madder, yellow ochre, lamp black,&c...
George Field 「Field's Chromatography」
..., and areobtained by the action of heat on mixtures of earthy or metallic baseswith cobalt...
George Field 「Field's Chromatography」
...Under the name Coëlin there has of late years beenimported from Germany the cobalt blue with a tin base to which referencehas just been made...
George Field 「Field's Chromatography」
...To obtain a perfect blue, neitherinclining to purple nor green, the cobalt and alumina should be freedfrom iron, and the former, as much as possible, from nickel also...
George Field 「Field's Chromatography」
...The blues of cobalt, on whatever base they may be prepared, aredistinguished from native and artificial ultramarines by not beingdecolorised by acids...
George Field 「Field's Chromatography」
...In commonwith cobalt blue, the name Azure has sometimes been given to it...
George Field 「Field's Chromatography」
...It may be said tohover in tint between a rich ultramarine and cobalt...
George Field 「Field's Chromatography」
...Is a pale ultramarine, with a cobalt hue; and, in spite of its name,less permanence than belongs to the richer and deeper sorts...
George Field 「Field's Chromatography」
...As a pigment, cobalt was unknown to the ancients; but to these vegetableand copper blues of theirs, a third blue may perhaps be added...
George Field 「Field's Chromatography」
...Another Prussian green, with a base of cobalt, is obtained byprecipitating the nitrate of that metal with yellow prussiate of potash...
George Field 「Field's Chromatography」
...True cobalt green is made byigniting a very large quantity of carbonate of zinc with a very smallquantity of carbonate of cobalt...
George Field 「Field's Chromatography」
...Chemically, good and stablecolours, they are not received with favour on the palette, and certainlymay be very well replaced by mixtures of cobalt blue and madder red...
George Field 「Field's Chromatography」
...A compound analogous to cobalt green may be made, of an olive hue, withmore body, and equally stable...
George Field 「Field's Chromatography」
...We may mention calcium, iron, hydrogen, sodium,carbon, nickel, magnesium, cobalt, aluminium, chromium, strontium,manganese, copper, zinc, cadmium, silver, tin, lead, potassium...
Robert Stawell Ball 「The Story of the Heavens」
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