The Encyclopedia Americana, Volume 7Grolier, 1985 - 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 . From the aspect of light , any color may 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 . From the aspect of light , any color may theoretically be matched with a mixture of no more than three colors . These are the additive color primaries : red , green , and blue ...
Page 316
... blue , and gray , and thus cannot see any of the mixed hues containing green or red , such as orange , blue - green , and violet . The red and green blind do , however , use the terms " red " and " green " just as people with normal ...
... blue , and gray , and thus cannot see any of the mixed hues containing green or red , such as orange , blue - green , and violet . The red and green blind do , however , use the terms " red " and " green " just as people with normal ...
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