Vivien Colin November 28, 2019 Fruit
Chromatophores are special pigment-containing cells that may change their size, but more often retain their original size but allow the pigment within them to become redistributed, thus varying the color and pattern of the animal. Chromatophores may respond to hormonal and or neurobal control mechanisms, but direst responses to stimulation by visible light, UV-radiation, temperature, pH-changes, chemicals, etc. have also been documented. The voluntary control of chromatophores is known as metachrosis. For example, cuttlefish and chameleons can rapidly change their appearance, both for camouflage and for signalling, as Aristotle first noted over 2000 years ago
When cephalopod molluscs like squid and cuttlefish find themselves against a light background, they contract many of their chromatography, concentrating the pigment into a smaller area, resulting in a pattern of tiny, dense, but widely spaced dots, appearing light. When they enter a darker environment, they allow their chromatography to expand, creating a pattern of larger dark spots, and making their bodies appear dark. Amphibians such as frogs have three kinds of star-shaped chromatophore cells in separate layers of their skin. The top layer contains ’phosphorescent’ with orange, red, or yellow pigments; the middle layer contains ’sophomores’ with a silvery light-reflecting pigment; while the bottom layer contains ’melanophores’ with dark melanin.
The yellow in green lends an elegant character to this color while the blue renders it warm. Light green reduces pressure. Symbolically green represents the power of nature and life and as such it is considered to be the most natural, relaxing, calming and balanced color. Red signals “stop” there is danger, while green signals “safe crossing” and thus reduces the tension in the body. Green can be used with ease in nurseries, and in children’s and teenagers’ rooms. The use of color green in nurseries will ensure a peaceful and comfortable transition into sleep for the baby. When green is used with more undertones of yellow, it clarifies the mind, and therefore can be used in teenagers’ rooms to foster success in school. The serenity of blue and the mental clarity achieved with yellow will have a good impact on them.
Sight starts developing after the 6th month in babies and development continues until the age of 10. Sight is one of the most important senses that connects us to the world. Light and color have a mesmerizing effect on us. On average, the human eye can perceive 150 different colors in visible light. This means a person with normal sight can differentiate between millions of different colors. Color is one of the most important characteristics that can help us assess, estimate and define an object. Each and every person has certain reactions stored in their perceptions and as such the perception of each color addresses the related emotion.
Blue, in all respects is the total opposite of red. While blue is transparent and wet in appearance red is opaque and dry. Psychologically the cold and comforting nature of blue is the polar opposite of the warmth and excitement of red. In contrast to red, blue reduces body temperature, blood pressure and pulse rate. Blue evokes feelings of contentment, spaciousness and comfort due to being the color of the sky and ocean as well. As the shade of blue approaches black with the addition of black it may become depressive and melancholic. Blue is a color that is widely recommended for use in children’s rooms. Especially in nurseries, the use of blue helps the baby’s easy and peaceful transition into sleep. It can also be comfortably used with active and vibrant children due to its calming effect. As is the case with all other colors, you can accessorize your room in red and yellow when you choose to paint your walls in blue.
There are several separate reasons why animals have evolved colors. Camouflage enables an animal to remain hidden from view. Animals use color to advertise services such as cleaning to animals of other species; to signal their sexual status to other members of the same species; and in mimicry, taking advantage of the warning coloration of another species. Some animals use flashes of color to divert attacks by startling predators. Zebras may possibly use motion dazzle, confusing a predator’s attack by moving a bold pattern rapidly. Some animals are colored for physical protection, with pigments in the skin to protect against sunburn, while some frogs can lighten or darken their skin for temperature regulation. Finally, animals can be colored incidentally. For example, blood is red because the heme pigment needed to carry oxygen is red. Animals colored in these ways can have striking natural patterns.
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