Unit 3
The World of Colours and Light
Welcome to the unit
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璇濋鑳屾櫙瀵艰
Light is everywhere in our world. We need it to see: it carries information from the world to our eyes
and
brains.
To
see
colours,
there
must
be
at
least
a
little
bit
of
light.
While
light
is
in
fact
made
of
all
colours, but the colours we see depend on the quantity and colour of light being thrown back (reflected) or
taken in (absorbed) by an object. In order for humans to see colour, the reflected light goes to sensitive area
in the back of our eyes called the retina (
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) which sends impulses to the brain which then interprets
the combination of impulses to be the colour humans see.
All of the colour on a printed page can be produced with the three pigment (
鑹茬礌
) primaries, red,
blue, and yellow. There are also called the subtractive primaries because together they make black.
Combinated in pairs, they yield another set of primaries, the additive, or light ,primaries. These are the
wavelengths of orange-red, blue-violet, and green that combine to make white light. This is how the colour
non your computer monitor behaves. When these colours are all combined in pairs they form, red, blue, and
yellow. That light is made up of colour----that , in away, colour is light, and energy.
Human beings feel a universal attraction to light. It is the source of life-
giving energy鈥? And
where
there is light there is colour.
Answer the following questions:
1. What can we learn from the above passage?
________________________________________________________________________
2. What colours ar
e in the 鈥渨hite light鈥?
________________________________________________________________________
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1. His theory was so ______ that no one at that time could understand.
A. complete
B. abstract
C. high
D. content
2. He has _______ the habit of smoking while reading books.
A. made
B. built
C. finished
D. developed
3. It was in the house _______ Picasso was born _______ his works were exhibited.
A. that; that
B. where; where
C. that; where
D. where; that
4. He proved himself a true gentleman and the beauty of his _____ was seen at its best when he worked
with others.
A. temper
B. appearance
C. talent
D. character
5. One of the advantages of living on the top floor of a highrise is that you can get a good ______.
A. sight
B. sense
C. view
D. look
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1.
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