Colour Facts Sheets – Mocomi.com

Colours
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General Knowledge for Kids
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Colours
The word colour comes from the
Latin word colos which means
cover or covering.
Astronomers use the colour of stars
to determine their size. The bigger
the star, the bluish it looks. And
the smaller the star the warmer
(red/yellow) it appears.
Black holes are stars which are very
dense and hence do not allow light
(and hence colour) to escape.

Colours
Each colour has a different wave-
length. For example the wavelength
for blue is 475 nm (nano meter)
and the wavelength for red is 650
nm.
Chromatics, colorimetry, chro-
matography, are words that are
used to describe the science of
colour.

Colours
The human eye distinguishes colour
based on the sensitivity of cells in
the retina to light of various
wavelengths.
Shades of a colour are created by
adding blackto the base colour.
Tints of a colour are created by
adding whiteto the base colour.
Tints
Shades

In general blue, green and
purple are considered cool
colors while yellow, orange
and red hues are considered
warm.
Complementary colors
are those which exist opposite to
each other on the color wheel. They
tend to look very vibrant when
used together making each colour
look very noticeable.
Cool colours
Warm colours
Colours

Colours
Analogous colours exist
next to each other on the colour
wheel. When used together they
give a very pleasant effect.
Black, white, gray and some
beige & brown shades are called
neutral colours or
earth tones. These colours do
not show up on the colour wheel.

Colours
Colour circle
Blue
Greenish Blue
Bluish Green
Green
Yellow
Orange
Red
Purple
Violet

The RBGcolour model is an addi-
tive model used in computer moni-
tors, TV's and mobiles.
The CMYK colour model is a
subtractive one and is used in
printing.
The ability of animals to take on the
colour of their environment is
known as camouflage.
Colours
Television
Mobiles
Printer
Camauflage

Iridescence is the property of
certain surfaces that appear to
change colour as the angle of
view or the angle of light re-
flecting on it changes.
Soap bubbles and the inside of
an abalone shell are examples of
iridescence.
Colours
Image scource: www.wikipedia.org, This file is licensed under the Creative Commons Attribution-Share Alike 3.0
Soap bubbleAbalone shell

A dichoric material is one
which causes visible light to be split
up into distinct beams of different
wavelengths or one in which light
rays having different polarisa-
tions are absorbed by differ-
ent amounts.
You can observe this when you press
a LCD display with your fingers.
Colours
LCD Display
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Colour Facts Sheets – Mocomi.com

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Colour Facts Sheets – Mocomi.com