the colours in the eye feather
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8/6/2019 The Colours in the Eye Feather
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The colours in the eye feather
The colours in the peacock tail are particularly beautiful because they are bright and
iridescent. An iridescent colour is a colour that changes with the angle of view. The
colours are not produced by pigments but by an optical effect called thin-film
interference that takes place in the barbules.4 In technical terms, the peacock has
structural colours.
In the eye pattern, the barbules appear bronze, blue, dark purple and green. Away
from the eye region, the barbules are uniformly green. The colours in the eye
feather can only be seen on the front surface of the feather because this is where
the barbules are positioned. The back of the feather is uniformly brown because the
barbs contain a brown pigment.
The eye pattern: The particular beauty of the eye pattern comes from the
rounded shapes that have a high degree of resolution. The pupil of the eye is
formed by a dark purple cardioid and the iris is formed by a blue ellipsoid. These
shapes are located within a pointed bronze ellipsoid that is surrounded by one or
two green fringes. A very important feature of the eye pattern is that it is a digital
pattern which is formed by the combined effect of many thousands of individual
barbules. Some patterns in nature are formed by natural growth mechanisms, as
with the spiral shape of the nautilus shell. However, the eye pattern in the peacock
tail requires the precise coordination of independent barbs and this cannot be
achieved by a simple growth mechanism. Barbules on adjacent barbs coordinate
perfectly with each other to produce the eye pattern.
The peafowl are forest birds that nest on the ground but roost in trees. They are terrestrial feeders.
In Hinduism, the Peacock is associated withSaraswati, a deity representing benevolence, patience,
kindness, compassion and knowledge. Similar to Saraswati, the Peacock is associated with Kwan-yin in
Asian spirituality. Kwan-yin (or Quan Yin) is also an emblem of love, compassionate watchfulness, good-
will, nurturing, and kind-heartedness. Legend tells us she chose to remain a mortal even though she
could be immortal because she wished to stay behind and aid humanity in their spiritual evolution.
No aspect of our mental life is more important to the quality and meaning of our
existence than emotions. They are what make life worth living, or sometimes ending.
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So it is not surprising that most of the great classical philosophersPlato, Aristotle,
Spinoza, Descartes, Hobbes, Humehad recognizable theories of emotion,
conceived as responses to certain sorts of events of concern to a subject, triggering
bodily changes and typically motivating characteristic behavior. What is surprising is
that in much of the twentieth-century philosophers of mind and psychologists
tended to neglect themperhaps because the sheer variety of phenomena covered
by the word emotion and its closest neighbors tends to discourage tidy theory. In
recent years, however, emotions have once again become the focus of vigorous
interest in philosophy, as well as in other branches of cognitive science. In view of
the proliferation of increasingly fruitful exchanges between researches of different
stripes, it is no longer useful to speak of the philosophy of emotion in isolation from
the approaches of other disciplines, particularly psychology, neurology, evolutionary
biology, and even economics. While it is quite impossible to do justice to those
approaches here, some sidelong glances in their direction will aim to suggest their
philosophical importance.
Basic emotion Basic opposite
Joy Sadness
Trust Disgust
Fear Anger
Surprise Anticipation
Sadness Joy
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Disgust Trust
Anger Fear
Anticipation Surprise
Human Feelings (The results of Emotions.) Feelings Opposite
Optimism Anticipation + Joy Disappointment
Love Joy + Trust Remorse
Submission Trust + Fear Contempt
Awe Fear+ Surprise Aggressiveness
Disappointment Surprise + Sadness Optimism
Remorse Sadness + Disgust Love
Contempt Disgust + Anger Submission
Aggressiveness Anger + AnticipationAwe
The Indian Peafowl orBlue Peafowl (Pavo cristatus) is a large and brightly
coloured bird of the pheasant family native to South Asia, but introduced and semi-feral in many other
parts of the world. The male, peacock, is predominantly blue with a fan-like crest of spatula-tipped wire-
like feathers and is best known for the long train made up of elongated upper-tail covert feathers which
bear colourful eyespots. These stiff and elongated feathers are raised into a fan and quivered in a display
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