Nascent Drama

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Green with envy highlights another emotional association, which William Shakespeare had first described as the "green-eyed monster" in Othello and The Merchant of Venice.[11]

 

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In areas that use the U.S. Dollar as currency, green carries a connotation of money, wealth, and capitalism, because green is the color of United States banknotes, giving rise to the slang term greenback for cash.[1]

 

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One of the more notable uses of this meaning is found in The Wonderful Wizard of Oz. In this story is the Emerald City, where everyone wears tinted glasses to which make everything look green.

 

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According to the populist interpretation of the story, the city’s color is used by the author, L. Frank Baum, to illustrate the financial system of America in his day, as he lived in a time when America was debating the use of paper money versus gold.[12]

 

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In science

 

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Color vision and colorimetry

 

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Human eyes have color receptors known as cone cells, of which there are three types.

 

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In some cases, one is missing or faulty, which can cause color blindness, including the common inability to distinguish red and yellow from green, known as deuteranopia or red–green color blindness.[9]

 

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Green is restful to the eye.

 

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Studies show that a green environment can reduce fatigue.[13]

 

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The perception of green is evoked by light having a spectrum dominated by energy with a wavelength of roughly 520–570 nm.

 

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The sensitivity of the dark-adapted human eye is greatest at about 507 nm, a blue-green color, while the light-adapted eye is most sensitive about 555 nm, a slightly yellowish green; these are the peak locations of the rod and cone (scotopic and photopic, respectively) luminosity functions.[14]

 

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Green is considered one of the additive primary colors, along with red and blue.

 

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Additive combination of primary colors can produce most colors.

 

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In subtractive color mixtures, green is created by mixing yellow and blue pigments or dyes.

 

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On the HSV color wheel, the complement of green is magenta; that is, a color corresponding to an equal mixture of red and blue light (one of the purples).

 

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On a traditional color wheel, based on subtractive color, the complementary color to green is considered to be red.[6]

 

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In minerals and chemistry

 

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Many minerals provide pigments which have been used in green paints and dyes over the centuries.

 

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Pigments, in this case, are minerals which reflect the color green, rather that emitting it through luminescent or phosphorescent qualities.