Since blue-green light is absorbed, its complementary color, red-orange, is reflected. Hence copper appears a red-orange color.
Sometimes As natural weathering proceeds, the metal exposed to the atmosphere changes in hue from the natural salmon pink color through a series of russet brown shades to light and dark chocolate browns and finally to a dark, dull slate gray or dull black from which the ultimate blue-green or gray-green patinas emerge.
GIGO:
In computer science, garbage in, garbage out is the concept that flawed, or nonsense input data produces nonsense output. Rubbish in, rubbish out is an alternate wording. The principle applies to all logical argumentation: soundness implies validity, but validity does not imply soundness.
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Answer:
Since blue-green light is absorbed, its complementary color, red-orange, is reflected. Hence copper appears a red-orange color.
Sometimes As natural weathering proceeds, the metal exposed to the atmosphere changes in hue from the natural salmon pink color through a series of russet brown shades to light and dark chocolate browns and finally to a dark, dull slate gray or dull black from which the ultimate blue-green or gray-green patinas emerge.
GIGO:
In computer science, garbage in, garbage out is the concept that flawed, or nonsense input data produces nonsense output. Rubbish in, rubbish out is an alternate wording. The principle applies to all logical argumentation: soundness implies validity, but validity does not imply soundness.
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