colour presentation for ngrade 9 and 10

1. Made by: Eilaf, Minna, Aya, Mariam, Maab
.

2. INTRODUCTION
•Contrary to popular belief, “colour” is not an
intrinsic property of the things we see around
us. Rather, it is the sensation resulting from a
given spectral distribution of light detected by
the three colour-sensors in the eye and
interpreted by the brain.

3. How do we see colors?
• The human eye and brain together translate light into color. Light
receptors within the eye transmit messages to the brain, which
produces the familiar sensations of color. Newton observed that color
is not inherent in objects. Rather, the surface of an object reflects
some colors and absorbs all the others.
• Color blindness can happen when one or more of the color cone cells
are absent, not working, or detect a different color than normal.

4. Does color effect our bodies and mind?
Take a minute and imagine the world around you without colors, how boring and
unexciting life would be. Colors play a vital role in our daily lives and it has been
proven that our activities and responses are influenced by them.
• Red: The color Red is the most vibrant of all the colors. It stimulates the adrenal
gland and the neurons.
• Yellow: Have you ever wondered why Smiley is yellow? The reason is that yellow
helps to release a chemical in the brain called Serotonin, essential for causing a
happy mood.
• Blue: If you want some creative juices spilling out of your mind then get exposed
to the color Blue. It is believed to have a soothing effect on human mind as it
helps to produce some calming chemicals in the brain.
• White: White is considered to be the most neutral color

5. How animals see, and can they see as we human do?
• Animals can see colour through the presence of specialized cells in their
eyes called cones, which ae sensitive to different wavelengths of light. The
number and types of cones in an animal’s eyes determine their color vision.
For example, humans have three types of cones, allowing us to see a wide
range of colors. Many animals, such as dogs, have only two types of cones,
so they have dichromatic vision and see more limited range of colors. Some
animals, like birds and insects, have four or even five types of cones, which
allow them to see broader spectrum of colors, including ultraviolet light
that is invisible to humans. Additionally, the arrangement of cones in an
animal’s eyes and the structure of their retinas can also affect how they
perceive colors. Overall, the differences in color vision between animals
and human are due to variations in the types and numbers of cones, as
well s the processing of visual information in their brains.

6. CONCLUSION
• Color science is the scientific study of color including lightning and optics;
measurement of light and color.
• Color theory is both the science and art of using color. This physiology of
colors involves eye’s and brain’s responses to light and the sensory data
they product.
• Color is the perception of three factors:
Reflected light expressed as hue, lightness and saturation
• Animals can see different kinds of colors from a broad range of spectrum.
• Color blindness is the inability to see the difference between the colors