VISIBLE LIGHT

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Last updated 11:21 AM on 2/1/23
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21 Terms

1
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What do each colour in the visible light spectrum have
its own narrow band of wavelength and frequency
2
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What is specular reflection
reflection from a smooth surface in a single direction
3
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What is diffuse reflection
reflection from a rough surface causing scattering
4
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What is dispersion
white light splits into its different colours
5
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Which waves are harder to change direction
waves with a longer wavelength
6
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What determines the colour of an opaque object
which wavelength of light are more strongly reflected
7
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What happens to wavelengths that are not reflected
wavelengths that aren't reflected are absorbed
8
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Why are objects white
all wavelengths are reflected equally
9
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Why are objects black
all waelengths are absorbed
10
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How are rainbows created
light refracts through water

the raindrops act like a prism

splits the sunlight into its 7 components
11
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Which colour refracts the most
Violet, shortest wavelength
12
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Which colour refracts the least
Red, longest wavelength
13
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What objects transmit light
transparent or translucent objects
14
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What occurs in refraction
the speed and wavelength decrease in denser material
15
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Why does dispersion in a pyramid occur
Different wavelengths refract at different amounts

They spread out and create a rainbow effect
16
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What are the three light primary colours
Red, Green, Blue
17
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What does red light + green light make
yellow light
18
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What does red light + blue light make
magenta light
19
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What does blue light + green light make
cyan light
20
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How do colour filters work
absorbing certain wavelengths and transmitting other wavelength
21
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What colours do colour filters transmit
only the colour they are

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