The Encyclopedia Americana, Volume 7Grolier, 1988 - Encyclopedias and dictionaries |
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Page 154
COBALT BLUE - COBB COBB COBBETT - COBDEN COBH - COBLENZ COBOURG - COBRA. 154 sulfates . Cobalt forms complex ions ... BLUE , kō'bôlt , is one of the most per- manent of the blue pigments . It is also known as Thénard's blue , cobalt ...
COBALT BLUE - COBB COBB COBBETT - COBDEN COBH - COBLENZ COBOURG - COBRA. 154 sulfates . Cobalt forms complex ions ... BLUE , kō'bôlt , is one of the most per- manent of the blue pigments . It is also known as Thénard's blue , cobalt ...
Page 311
... blue , each having in its appearance no tinge of any other hue . any color may From the aspect of light , theoretically be matched with a mixture of no more than three colors . These are the additive color primaries : red , green , and blue ...
... blue , each having in its appearance no tinge of any other hue . any color may From the aspect of light , theoretically be matched with a mixture of no more than three colors . These are the additive color primaries : red , green , and blue ...
Page 312
... blue wavelengths of light from the sun by particles ( clumps of air molecules ) in the atmosphere that is responsible for the blue appearance of the sky . Also , the sunlight , as we see it in rela- tion to a blue sky , is yellow ...
... blue wavelengths of light from the sun by particles ( clumps of air molecules ) in the atmosphere that is responsible for the blue appearance of the sky . Also , the sunlight , as we see it in rela- tion to a blue sky , is yellow ...
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