Summary: Light And Colour
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Read the summary and the most important questions on light and colour
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1 seeing colour
This is a preview. There are 10 more flashcards available for chapter 1
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how is a rainbow formed?
A rainbow is formed by raindrops splitting up white sunlight into coulours. -
Where does a colour spectrum consist of?
of all colours of the rainbow -
How do you get the colours which aren't in the colour spectrum?
by mixing colours from the spectrum -
Why do you see objects which don't produce light?
because they reflect light. -
What does a coloured object reflect and absorb?
it reflects only its own colour and absorbs all other colours. -
How can you show that an energy-saving light bulb produces light different from that of a normal light bulb?
make a colour spectrum of the light from both lamps and compare them. -
Why do you always see someons pupils as black?
When you look at someone under normal lighting, there is no light that enters the eye, reflects from the back of the eye , and passes through the (small) pupil out of the eye again. The light stays inside the eye. -
why can you see the red colour of the inside of your eye while using flash?
the inside from your eye (the retina) then reflects part of the flash light that travels from directly in front of you, and then travels straight out again. The retina is red, so you only see red light reflected. -
the cone cells function poorly when there is relatively little light. Which other cells are used in the eye then?
rod cells, which cannot detect the various colours -
How many percent of the girls is colour blind?
0,5%
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