The Encyclopedia Americana, Volume 7Grolier, 1989 - Encyclopedias and dictionaries |
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Page 154
COBALT BLUE - COBB I COBB COBBETT - COBDEN Anti - Corn - Law. 154 sulfates . Cobalt forms complex ions with ammo- nia ... 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 I COBB COBBETT - COBDEN Anti - Corn - Law. 154 sulfates . Cobalt forms complex ions with ammo- nia ... BLUE , kō'bôlt , is one of the most per- manent of the blue pigments . It is also known as Thénard's blue , cobalt ...
Page 307
... blue flag. COLOR THE COLORS OF THE SPECTRUM The colors of the spectrum may be pro- duced by passing white light through a prism . As shown in the schematic dia- gram above , the light from the source is first passed through a narrow slit ...
... blue flag. COLOR THE COLORS OF THE SPECTRUM The colors of the spectrum may be pro- duced by passing white light through a prism . As shown in the schematic dia- gram above , the light from the source is first passed through a narrow slit ...
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 ...
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