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Difference between revisions of "Colour"
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: A cyan [[object]] appears blue.
 
: A cyan [[object]] appears blue.
 
: A magenta [[object]] appears magenta.
 
: A magenta [[object]] appears magenta.
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|}
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==Key Stage 4==
 +
===Meaning===
 +
[[Colour]] is a [[property]] of [[object]]s that we can [[Sight|see]].
 +
 +
===About Colour===
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White [[light]] can be divided into 7 [[colour]]s:
 +
*Red
 +
*Orange
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*Yellow
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*Green
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*Blue
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*Indigo
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*Violet
 +
 +
: Red [[light]] has the lowest [[frequency]] and the longest [[wavelength]].
 +
: Violet [[light]] has the highest [[frequency]] and the shortest [[wavelength]].
 +
 +
===Colour and Reflection===
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{| class="wikitable"
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|-
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|[[File:RedObjectColour.png|center|300px]]
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|[[File:BlueObjectColour.png|center|300px]]
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|-
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| style="height:20px; width:200px; text-align:center;" |A red [[object]] [[reflection|reflects]] red [[light]] but [[Absorb (physics)|absorbs]] all the others '''colours'''.
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| style="height:20px; width:200px; text-align:center;" |A blue [[object]] [[reflection|reflects]] blue [[light]] but [[Absorb (physics)|absorbs]] all the others '''colours'''.
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|}
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: [[Colour]] exists because [[object]]s [[Absorb (Physics)|absorb]] some [[frequency|frequencies]] of [[light]] while other [[colour]]s are not.
 +
: A [[colour]]ed [[object]] [[Absorb (Physics)|absorbs]] some [[colour]]s and [[reflect]]s others. For example [[leaf|leaves]] are green because the [[chlorophyll]] inside them [[Absorb (Physics)|absorbs]] red and blue [[light]] but not [[green]].
 +
 +
===Eyes and Colour===
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: The [[human]] [[eyes]] only have three different '''colour''' sensing [[Cell (Biology)|cells]] called [[Cone (Biology)|cones]]. They can detect; red, green or blue light. All other '''colours''' we see are caused by a pair of different [[Cone (Biology)|cones]] detecting [[light]] at the same time.
 +
: If the red [[Cone (Biology)|cones]] and blue [[Cone (Biology)|cones]] both detect [[light]] then we see [[magenta]].
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: If the red [[Cone (Biology)|cones]] and green [[Cone (Biology)|cones]] both detect [[light]] then we see [[yellow]].
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: If the blue [[Cone (Biology)|cones]] and green [[Cone (Biology)|cones]] both detect [[light]] then we see [[cyan]].
 +
 +
===Coloured Mixing===
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{| class="wikitable"
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|-
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|[[File:ColourMixing.png|center|500px]]
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|-
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| style="height:20px; width:200px; text-align:center;" |
 +
: Magenta can be made by mixing red and blue [[light]].
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: Yellow can be made by mixing red and green [[light]].
 +
: Cyan can be made by mixing blue and green [[light]].
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: White can be made by mixing red, blue and green [[light]].
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|}
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{| class="wikitable"
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|-
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| style="height:20px; width:200px; text-align:center;" |'''Light Colour'''
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| style="height:20px; width:100px; text-align:center;" |'''Object Colour'''
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| style="height:20px; width:100px; text-align:center;" |'''Appearance'''
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|-
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| style="height:20px; width:200px; text-align:center;" rowspan = "6"|Red
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| style="height:20px; width:100px; text-align:center;" |Red
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| style="height:20px; width:100px; text-align:center;" |Red
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|-
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| style="height:20px; width:100px; text-align:center;" |Blue
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| style="height:20px; width:100px; text-align:center;" |Black
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|-
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| style="height:20px; width:100px; text-align:center;" |Green
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| style="height:20px; width:100px; text-align:center;" |Black
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|-
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| style="height:20px; width:100px; text-align:center;" |Magenta
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| style="height:20px; width:100px; text-align:center;" |Red
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|-
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| style="height:20px; width:100px; text-align:center;" |Cyan
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| style="height:20px; width:100px; text-align:center;" |Black
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|-
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| style="height:20px; width:100px; text-align:center;" |Yellow
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| style="height:20px; width:100px; text-align:center;" |Red
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|-
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| style="height:20px; width:200px; text-align:center;" rowspan = "6"|Blue
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| style="height:20px; width:100px; text-align:center;" |Red
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| style="height:20px; width:100px; text-align:center;" |Black
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|-
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| style="height:20px; width:100px; text-align:center;" |Blue
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| style="height:20px; width:100px; text-align:center;" |Blue
 +
|-
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| style="height:20px; width:100px; text-align:center;" |Green
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| style="height:20px; width:100px; text-align:center;" |Black
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|-
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| style="height:20px; width:100px; text-align:center;" |Magenta
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| style="height:20px; width:100px; text-align:center;" |Blue
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|-
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| style="height:20px; width:100px; text-align:center;" |Cyan
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| style="height:20px; width:100px; text-align:center;" |Blue
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|-
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| style="height:20px; width:100px; text-align:center;" |Yellow
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| style="height:20px; width:100px; text-align:center;" |Black
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|-
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| style="height:20px; width:200px; text-align:center;" rowspan = "6"|Green
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| style="height:20px; width:100px; text-align:center;" |Red
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| style="height:20px; width:100px; text-align:center;" |Black
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|-
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| style="height:20px; width:100px; text-align:center;" |Blue
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| style="height:20px; width:100px; text-align:center;" |Black
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|-
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| style="height:20px; width:100px; text-align:center;" |Green
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| style="height:20px; width:100px; text-align:center;" |Green
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|-
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| style="height:20px; width:100px; text-align:center;" |Magenta
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| style="height:20px; width:100px; text-align:center;" |Black
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|-
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| style="height:20px; width:100px; text-align:center;" |Cyan
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| style="height:20px; width:100px; text-align:center;" |Green
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|-
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| style="height:20px; width:100px; text-align:center;" |Yellow
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| style="height:20px; width:100px; text-align:center;" |Green
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|-
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| style="height:20px; width:200px; text-align:center;" rowspan = "6"|Magenta
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| style="height:20px; width:100px; text-align:center;" |Red
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| style="height:20px; width:100px; text-align:center;" |Red
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|-
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| style="height:20px; width:100px; text-align:center;" |Blue
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| style="height:20px; width:100px; text-align:center;" |Blue
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|-
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| style="height:20px; width:100px; text-align:center;" |Green
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| style="height:20px; width:100px; text-align:center;" |Black
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|-
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| style="height:20px; width:100px; text-align:center;" |Magenta
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| style="height:20px; width:100px; text-align:center;" |Magenta
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|-
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| style="height:20px; width:100px; text-align:center;" |Cyan
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| style="height:20px; width:100px; text-align:center;" |Blue
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|-
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| style="height:20px; width:100px; text-align:center;" |Yellow
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| style="height:20px; width:100px; text-align:center;" |Red
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|-
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| style="height:20px; width:200px; text-align:center;" rowspan = "6"|Cyan
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| style="height:20px; width:100px; text-align:center;" |Red
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| style="height:20px; width:100px; text-align:center;" |Black
 +
|-
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| style="height:20px; width:100px; text-align:center;" |Blue
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| style="height:20px; width:100px; text-align:center;" |Blue
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|-
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| style="height:20px; width:100px; text-align:center;" |Green
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| style="height:20px; width:100px; text-align:center;" |Green
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|-
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| style="height:20px; width:100px; text-align:center;" |Magenta
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| style="height:20px; width:100px; text-align:center;" |Blue
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|-
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| style="height:20px; width:100px; text-align:center;" |Cyan
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| style="height:20px; width:100px; text-align:center;" |Cyan
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|-
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| style="height:20px; width:100px; text-align:center;" |Yellow
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| style="height:20px; width:100px; text-align:center;" |Green
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|-
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| style="height:20px; width:200px; text-align:center;" rowspan = "6"|Yellow
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| style="height:20px; width:100px; text-align:center;" |Red
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| style="height:20px; width:100px; text-align:center;" |Red
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|-
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| style="height:20px; width:100px; text-align:center;" |Blue
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| style="height:20px; width:100px; text-align:center;" |Black
 +
|-
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| style="height:20px; width:100px; text-align:center;" |Green
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| style="height:20px; width:100px; text-align:center;" |Green
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|-
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| style="height:20px; width:100px; text-align:center;" |Magenta
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| style="height:20px; width:100px; text-align:center;" |Red
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|-
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| style="height:20px; width:100px; text-align:center;" |Cyan
 +
| style="height:20px; width:100px; text-align:center;" |Green
 +
|-
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| style="height:20px; width:100px; text-align:center;" |Yellow
 +
| style="height:20px; width:100px; text-align:center;" |Yellow
 
|}
 
|}

Revision as of 13:49, 24 February 2019

Key Stage 1

All the colours in the rainbow.

Meaning

Colour is something we see with our eyes.

Singular Noun: Colour
Plural Noun: Colours
Verb: Colour

About Colours

The colours we can see are red, orange, yellow, green, blue, indigo and violet. If you mix colours of paint together you can get another colour. Red and yellow paint mixed together makes orange. Blue and yellow paint mixed together make green. Blue and red paint mixed together makes purple. If you mix all three you can make brown.

Examples

Grass.png
RosePicture.png
Grass is a green colour. The colour of this rose is red.
Sky.png
SunPainting.png
The sky is blue in colour. I will colour in The Sun yellow with paint.

Key Stage 3

Meaning

Colour is a property of objects that we can see.

About Colour

White light can be divided into 7 colours:

  • Red
  • Orange
  • Yellow
  • Green
  • Blue
  • Indigo
  • Violet
Red light has the lowest frequency and the longest wavelength.
Violet light has the highest frequency and the shortest wavelength.

Colour and Objects

RedObjectColour.png
BlueObjectColour.png
A red object reflects red light but absorbs all the others colours. A blue object reflects blue light but absorbs all the others colours.

Eyes and Colour

The human eyes only have three different colour sensing cells called cones. They can detect; red, green or blue light. All other colours we see are caused by a pair of different cones detecting light at the same time.
If the red cones and blue cones both detect light then we see magenta.
If the red cones and green cones both detect light then we see yellow.
If the blue cones and green cones both detect light then we see cyan.

Coloured Mixing

ColourMixing.png
Magenta can be made by mixing red and blue light.
Yellow can be made by mixing red and green light.
Cyan can be made by mixing blue and green light.
White can be made by mixing red, blue and green light.

Primary Colours

Primary Coloured Objects
RedLight.gif
A red object appears red under red light.
A blue object appears black under red light.
A green object appears black under red light.
BlueLight.gif
A red object appears black under blue light.
A blue object appears blue under blue light.
A green object appears black under blue light.
GreenLight.gif
A red object appears black under green light.
A blue object appears black under green light.
A green object appears green under green light.

Secondary Colours

Secondary Coloured Objects
RedLightMCY.gif
A yellow object appears red under red light.
A cyan object appears black under red light.
A magenta object appears red under red light.
BlueLightMCY.gif
A yellow object appears black under blue light.
A cyan object appears blue under blue light.
A magenta object appears blue under blue light.
GreenLightMCY.gif
A yellow object appears green under green light.
A cyan object appears green under green light.
A magenta object appears black under green light.
Secondary Coloured Lights
YellowLight.gif
A red object appears red under yellow light.
A blue object appears black under yellow light.
A green object appears green under yellow light.
CyanLight.gif
A red object appears black under cyan light.
A blue object appears blue under cyan light.
A green object appears green under cyan light.
MagentaLight.gif
A red object appears red under magenta light.
A blue object appears blue under magenta light.
A green object appears black under magenta light.

Colour Filters

Primary Coloured Filters
RedFilter.gif

Through a red filter:

A red object appears red.
A blue object appears black.
A green object appears black.
A yellow object appears red.
A cyan object appears black.
A magenta object appears red.
BlueFilter.gif

Through a blue filter:

A red object appears black.
A blue object appears blue.
A green object appears black.
A yellow object appears black.
A cyan object appears blue.
A magenta object appears blue.
GreenFilter.gif

Through a green filter:

A red object appears black.
A blue object appears black.
A green object appears green.
A yellow object appears green.
A cyan object appears green.
A magenta object appears black.
Primary Coloured Filters
YellowFilter.gif

Through a yellow filter:

A red object appears red.
A blue object appears black.
A green object appears green.
A yellow object appears yellow.
A cyan object appears green.
A magenta object appears red.
CyanFilter.gif

Through a cyan filter:

A red object appears black.
A blue object appears blue.
A green object appears green.
A yellow object appears green.
A cyan object appears cyan.
A magenta object appears blue.
MagentaFilter.gif

Through a magenta filter:

A red object appears red.
A blue object appears blue.
A green object appears black.
A yellow object appears red.
A cyan object appears blue.
A magenta object appears magenta.

Key Stage 4

Meaning

Colour is a property of objects that we can see.

About Colour

White light can be divided into 7 colours:

  • Red
  • Orange
  • Yellow
  • Green
  • Blue
  • Indigo
  • Violet
Red light has the lowest frequency and the longest wavelength.
Violet light has the highest frequency and the shortest wavelength.

Colour and Reflection

RedObjectColour.png
BlueObjectColour.png
A red object reflects red light but absorbs all the others colours. A blue object reflects blue light but absorbs all the others colours.
Colour exists because objects absorb some frequencies of light while other colours are not.
A coloured object absorbs some colours and reflects others. For example leaves are green because the chlorophyll inside them absorbs red and blue light but not green.

Eyes and Colour

The human eyes only have three different colour sensing cells called cones. They can detect; red, green or blue light. All other colours we see are caused by a pair of different cones detecting light at the same time.
If the red cones and blue cones both detect light then we see magenta.
If the red cones and green cones both detect light then we see yellow.
If the blue cones and green cones both detect light then we see cyan.

Coloured Mixing

ColourMixing.png
Magenta can be made by mixing red and blue light.
Yellow can be made by mixing red and green light.
Cyan can be made by mixing blue and green light.
White can be made by mixing red, blue and green light.
Light Colour Object Colour Appearance
Red Red Red
Blue Black
Green Black
Magenta Red
Cyan Black
Yellow Red
Blue Red Black
Blue Blue
Green Black
Magenta Blue
Cyan Blue
Yellow Black
Green Red Black
Blue Black
Green Green
Magenta Black
Cyan Green
Yellow Green
Magenta Red Red
Blue Blue
Green Black
Magenta Magenta
Cyan Blue
Yellow Red
Cyan Red Black
Blue Blue
Green Green
Magenta Blue
Cyan Cyan
Yellow Green
Yellow Red Red
Blue Black
Green Green
Magenta Red
Cyan Green
Yellow Yellow
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