The Green
(Color of the world)
Green is a color, the perception of which is
evoked by light having a spectrum dominated by energy with a wavelength of
roughly 520–570 nanometers. In the subtractive color system, it is not a
primary color, but is created out of a mixture of yellow and blue, or yellow
and cyan; it is considered one of the additive primary colors. On the HSV color
wheel, also known as the RGB color wheel, the complement of green is magenta;
that is, a purple color corresponding to an equal mixture of red and blue
light. On a color wheel based on traditional color theory (RYB), the
complementary color to green is considered to be red.
The
word green is closely related to the Old English verb growan, "to
grow". It is used to describe plants or the ocean. Sometimes it can also
describe someone who is inexperienced, jealous, or sick. In the United States
of America, green is a slang term for money, among other things. Several
colloquialisms have derived from these meanings, such as "green around the
gills", a phrase used to describe a person who looks ill.
