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Colour Picker: Magenta to Red

Colour Picker: Magenta to Red

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Colour Picker: Magenta to Red

Colour Picker: Magenta to Red

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Colour Picker: Blue to Magenta

Colour Picker: Blue to Magenta

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Colour Picker: Blue to Magenta

Colour Picker: Blue to Magenta

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Colour Picker: Cyan to Blue

Colour Picker: Cyan to Blue

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Colour Picker: Cyan to Blue

Colour Picker: Cyan to Blue

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Colour Picker: Green to Cyan

Colour Picker: Green to Cyan

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Colour Picker: Green to Cyan

Colour Picker: Green to Cyan

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Colour Picker: Yellow to Green

Colour Picker: Yellow to Green

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Colour Picker: Yellow to Green

Colour Picker: Yellow to Green

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Colour Picker: Red to Yellow

Colour Picker: Red to Yellow

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Colour Picker: Red to yellow

Colour Picker: Red to yellow

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1530 RGB Colours

1530 RGB Colours

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256 RGB Spectral Colours: Magenta to Red

256 RGB Spectral Colours: Magenta to Red

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256 RGB Spectral Colours: Blue to Magenta

256 RGB Spectral Colours: Blue to Magenta

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256 RGB Spectral Colours: Cyan to Blue

256 RGB Spectral Colours: Cyan to Blue

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256 RGB Spectral Colours: Green to Cyan

256 RGB Spectral Colours: Green to Cyan

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256 RGB Spectral Colours: Yellow to Green

256 RGB Spectral Colours: Yellow to Green

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256 RGB Spectral Colours: Red to Yellow

256 RGB Spectral Colours: Red to Yellow

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HSB Greyscale - Disks

HSB Greyscale – Disks

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HSB Greyscale: Disks

HSB Greyscale: Disks

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HSB Colour Model: Wedges

HSB Colour Model: Wedges

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HSB Colour Model: Wedges

HSB Colour Model: Wedges

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HSB Colour Model: Disks

HSB Colour Model: Disks

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HSB Colour Model: Disks

HSB Colour Model: Disks

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Mixing RGB Primary Colours

Mixing RGB Primary Colours

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Mixing RGB Primary Colours

Mixing RGB Primary Colours

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Mixing Primary Colours in Different Proportions

Mixing Primary Colours in Different Proportions

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Adding Colours Between RGB Primaries

Adding Colours Between RGB Primaries

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Colours Between RGB Primaries

Colours Between RGB Primaries

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RGB Colour Wheels with 3 to 102 Colours

RGB Colour Wheels with 3 to 102 Colours

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Hue and Greyscale

Hue and Greyscale

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RGB and HSB Colour Values

RGB and HSB Colour Values

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HSB Colour Model: Hue and Brightness

HSB Colour Model: Hue and Brightness

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HSB Colour Model: Hue and Saturation

HSB Colour Model: Hue and Saturation

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HSB Colour Model: Hue and Brightness

HSB Colour Model: Hue and Brightness

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HSB Colour Model: Hue and Saturation

HSB Colour Model: Hue and Saturation

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RGB and HSB Colour Values

RGB and HSB Colour Values

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RGB Colour Model: Saturation

RGB Colour Model: Saturation

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Saturation in Sunlight

Saturation in Sunlight

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HSB Colour Model: Hue Saturation and Brightness

HSB Colour Model: Hue Saturation and Brightness

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Making Spectral Colour using the RGB Colour Model

Making Spectral Colour using the RGB Colour Model

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Spectral Colour

Spectral Colour

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Human Eye Eyeball and Retina

Human Eye Eyeball and Retina

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Retina of the Human Eye in Detail

Retina of the Human Eye in Detail

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Human Eye in Cross Section

Human Eye in Cross Section

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How to See a Rainbow

How to See a Rainbow

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Paths of Red Green and Blue Rays in a Raindrop

Paths of Red Green and Blue Rays in a Raindrop

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RYB Subtractive Colour Model

RYB Subtractive Colour Model

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CMY Subtractive Colour Model

CMY Subtractive Colour Model

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RGB Additive Colour Model

RGB Additive Colour Model

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Using RGB Colour to Mix Wavelengths of Light

Using RGB Colour to Mix Wavelengths of Light

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Sensitivity of Eye to the Colour Spectrum (svg) 11000-0-A-BL-EN

Sensitivity of Eye to the Colour Spectrum

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Response of the Cone Cells in the Human Eye to Colour (svg) 11010-0-A-BL-EN

Response of the Cone Cells in the Human Eye to Colour

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Refraction, Reflection and Total Internal Reflection

Refraction, Reflection and Total Internal Reflection

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Sunlight Reflects off a Fish in Water

Sunlight Reflects off a Fish in Water

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Wavelength, Frequency and Energy Compared

Wavelength, Frequency and Energy Compared

This diagram of the electromagnetic spectrum shows how wavelength, frequency and energy are related to one another.
  • The diagram shows that the electromagnetic spectrum can be described as bands of electromagnetic radiation. Radio waves which have the longest wavelengths and the lowest frequency appear at the top of the diagram whilst gamma rays which have the shortest wavelengths but ...

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Electromagnetic spectrum

Electromagnetic spectrum

This diagram shows that the electromagnetic spectrum includes waves with all possible wavelengths, ranging from low energy radio waves through visible light to high energy gamma rays.
  • Notice that a wave with a longer wavelength has a lower frequency and carries less energy.
  • Notice that a wave with a shorter wavelength has a higher frequency and carries more energy.
  • ...

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Calculating the Frequency of Electromagnetic Waves

Calculating the Frequency of Electromagnetic Waves

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Yellow, Cyan and Magenta Lights Projected onto a Dark Surface

Yellow, Cyan and Magenta Lights Projected onto a Dark Surface

This diagram shows the effect of projecting cyan, magenta and yellow light onto a neutral coloured surface.
  • In the RGB colour model, cyan, magenta and yellow are secondary colours. Notice what colours are produced where they overlap!
  • Imagine that the three circles of colour (cyan, magenta and yellow) are produced by torches shining beams of light so they overlap ...

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Combining Different Wavelengths of Light to make White

Combining Different Wavelengths of Light to make White

This diagram looks at three situations in which an observer will see white light reflected off a dark surface.

Three different light sources are shown in the diagram.
  • Each light source produces a different combination of wavelengths and each wavelength has the same intensity.
  • The light source at the top of the diagram contains three component colours: ...

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Wavelength and Speed of Light in Different Materials

Wavelength and Speed of Light in Different Materials

This diagram shows the waveform of rays of red light (electromagnetic radiation) travelling through equally sized blocks of different transparent materials.
  • The top block contains a vacuum so the speed of light, the wavelength and the distance travelled are all shown to be 100%.
  • The diagram then illustrates the relative speed, wavelength and distance travelled as light passes through ...

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Why an Object Appears Red in Sunlight

Why an Object Appears Red in Sunlight

This is one of a set of 10 diagrams exploring why objects appear to be different colours to an observer.

There are always three key factors that affect the colour of anΒ object.
  • The first is the type of light source and what happens to the light on its journey towards an object.
  • The second is what happens ...

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Refraction and Dispersion of Wavelengths of Light

Refraction and Dispersion of Wavelengths of Light

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Why an Object Appears Transparent in Sunlight

Why an Object Appears Transparent in Sunlight

This is one of a set of 10 diagrams exploring why objects appear to be different colours to an observer.

There are always three key factors that affect the colour of an object.
  • The first is the type of light source and what happens to the light on its journey towards an object.
  • The second is what ...

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Why an Object Appears Cyan in Sunlight

Why an Object Appears Cyan in Sunlight

This is one of a set of 10 diagrams exploring why objects appear to be different colours to an observer.

There are always three key factors that affect the colour of an object.
  • The first is the type of light source and what happens to the light on its journey towards an object.
  • The second is what ...

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Why an Object Appears Yellow in Sunlight

Why an Object Appears Yellow in Sunlight

This is one of a set of 10 diagrams exploring why objects appear to be different colours to an observer.

There are always three key factors that affect the colour of an object.
  • The first is the type of light source and what happens to the light on its journey towards an object.
  • The second is what ...

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Why an Object Appears Violet in Sunlight

Why an Object Appears Violet in Sunlight

This is one of a set of 10 diagrams exploring why objects appear to be different colours to an observer.

There are always three key factors that affect the colour of an object.
  • The first is the type of light source and what happens to the light on its journey towards an object.
  • The second is what ...

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Why an Object Appears Blue in Sunlight

Why an Object Appears Blue in Sunlight

This is one of a set of 10 diagrams exploring why objects appear to be different colours to an observer.

There are always three key factors that affect the colour of an object.
  • The first is the type of light source and what happens to the light on its journey towards an object.
  • The second is what ...

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Why-an-Object-Appears-Green-in-Sunlight (svg) 02000-0-A-BL-EN

Why an Object Appears Green in Sunlight

This is one of a set of 10 diagrams exploring why objects appear to be different colours to an observer.

There are always three key factors that affect the colour of an object.
  • The first is the type of light source and what happens to the light on its journey towards an object.
  • The second is what ...

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Why an Object Appears Orange in Sunlight

Why an Object Appears Orange in Sunlight

This is one of a set of 10 diagrams exploring why objects appear to be different colours to an observer.

There are always three key factors that affect the colour of anΒ object.
  • The first is the type of light source and what happens to the light on its journey towards an object.
  • The second is what happens ...

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Why an Object Appears White in Sunlight

Why an Object Appears White in Sunlight

This is one of a set of 10 diagrams exploring why objects appear to be different colours to an observer.

There are always three key factors that affect the colour of anΒ object.
  • The first is the type of light source and what happens to the light on its journey towards an object.
  • The second is what happens ...

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Long Waves to Short Waves

Long Waves to Short Waves

This diagram shows six electromagnetic waves. Each wave corresponds with a colour within the visible spectrum that an observer might recognise. Remember that:
  • Electromagnetic waves, which are a form of electromagnetic radiation, propagating from a light source, travel through space and encounter different materials.
  • Colour is not a property of electromagnetic radiation, but an aspect of visual perception.
  • A ...

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Electric and Magnetic Properties of Light

Electric and Magnetic Properties of Light

This diagram shows that an electromagnetic wave (lightwave) results from the interaction of an electric and magnetic field.
  • Electromagnetic waves are produced by the Sun as a result of thermonuclear fusion.
  • The explosive force of thermonuclear fusion is caused by gravity crushing hydrogen atoms until they collapse.
  • The nuclear reaction forces hydrogen atoms to combine into helium atoms and ...

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Actual and Observed Position of an Object in Water

Actual and Observed Position of an Object in Water

THE BULLET POINTS BELOW EXPLAIN KEY FEATURES OF THE DIAGRAM

  • This diagram explores the question of where an object, such as a fish in water, appearsΒ to an observer looking down from above.
  • The actual position of the fish and the apparent position from the point of view of the observer are different because of the effects of ...

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Refraction of a Ray of Red Light

Refraction of a Ray of Red Light

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Refraction and Dispersion of a Ray of White Light

Refraction and Dispersion of a Ray of White Light

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Prism Splits a Ray of Light into Spectral Colours (svg) 06700-0-A-BL-EN

Prism Splits a Ray of Light into Spectral Colours

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How to Use the Refractive Index of a Medium

How to Use the Refractive Index of a Medium

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Ray of Light Strikes a Surface at a Right Angle

Ray of Light Strikes a Surface at a Right Angle

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Light strikes Curved Surface in Line with the Normal

Light strikes Curved Surface in Line with the Normal

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Reflection and Refraction at a Curved Boundary

Reflection and Refraction at a Curved Boundary

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Reflection of a Ray of Light

Reflection of a Ray of Light

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Chromatic Dispersion of Red Green and Blue Wavelengths

Chromatic Dispersion of Red Green and Blue Wavelengths

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Chromatic Dispersion of a Ray of White Light

Chromatic Dispersion of a Ray of White Light

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Refractive Index Explained

Refractive Index Explained

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The Law of Refraction Explained

The Law of Refraction Explained

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Refraction of a Ray of Light Away from the Normal

Refraction of a Ray of Light Away from the Normal

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Refraction of a Ray of Light Towards the Normal

Refraction of a Ray of Light Towards the Normal

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Overlapping Beams of Blue and Red Light Make Magenta

Overlapping Beams of Blue and Red Light Make Magenta

This is one of a set of 3 diagrams showing two torches project pairs of RGB primary colours onto a neutral coloured surface.

In this diagram blue and red primary colours overlap to produce magenta.

Understanding the diagrams:
  • The diagrams illustrate how the RGB colour model works in practice.
  • The two primary colours have the ...

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Overlapping Beams of Green and Blue Light Make Cyan

Overlapping Beams of Green and Blue Light Make Cyan

This is one of a set of 3 diagrams showing two torches project pairs of RGB primary colours onto a neutral coloured surface.

In this diagram green and blue primary colours overlap to produce cyan.

Understanding the diagrams:
  • The diagrams illustrate how the RGB colour model works in practice.
  • The two primary colours have the ...

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Overlapping Beams of Red and Green Light Make Yellow

Overlapping Beams of Red and Green Light Make Yellow

This is one of a set of 3 diagrams showing two torches project pairs of RGB primary colours onto a neutral coloured surface.

In this diagram red and green primary colours overlap to produce yellow.

Understanding the diagrams:
  • The diagrams illustrate how the RGB colour model works in practice.
  • The two primary colours have the ...

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Red, Green and Blue Lights Projected onto a Dark Surface

Red, Green and Blue Lights Projected onto a Dark Surface

This diagram shows the effect of projecting red, green and blue light onto a neutral coloured surface.
  • Imagine that the three circles of colour (red, green and blue) are produced by torches shining beams of light so they overlap one another.
  • Overlapping pairs of primary colours produce secondary colours.
  • The area where all three primary colours overlap is white.
  • ...

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Blue Light Projected onto a Dark Surface

Blue Light Projected onto a Dark Surface

This is one of a set of 3 diagrams showing torches projecting red, green and blue light onto a neutral coloured surface.

A fourth diagram shows what happens when all three are on at the same time and their beams partially overlap one another.

Understanding the diagrams:
  • The diagrams illustrate how the RGB colour model ...

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Green Light Projected onto a Dark Surface

Green Light Projected onto a Dark Surface

This is one of a set of 3 diagrams showing torches projecting red, green and blue light onto a neutral coloured surface.

A fourth diagram shows what happens when all three are on at the same time and their beams partially overlap one another.

Understanding the diagrams:
  • The diagrams illustrate how the RGB colour model ...

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Red light Projected onto a Dark Surface

Red light Projected onto a Dark Surface

This is one of a set of 3 diagrams showing torches projecting red, green and blue light onto a neutral coloured surface.

A fourth diagram shows what happens when all three are on at the same time and their beams partially overlap one another.

Understanding the diagrams:
  • The diagrams illustrate how the RGB colour model ...

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The Human Eye and RGB Colour

The Human Eye and RGB Colour

This diagram is about the perception of colour. It explores how our eyes respond to wavelengths of light corresponding with red, green and blue.
  • As we look at the world on a sunny day a vast range of wavelengths of visible light enter our eyes. Each wavelength corresponds with the perception of a different spectral colour.
  • When wavelengths of ...

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Spectral and RGB Colour

Spectral and RGB Colour

This diagram shows the six spectral colours associated with the colours of the rainbow.
  • The top half of the diagram shows that each of these spectral colours can be produced by a single wavelength of light.
  • The bottom half of the diagram shows that three spectral colours (red, green and blue) can be combined in pairs to produce orange, ...

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Spectral Colour and the RGB Colour Model

Spectral Colour and the RGB Colour Model

This diagram shows six spectral colours, red, orange, yellow, green, blue and violet.Β 
  • Spectral colours are produced by a single wavelength of light.
  • Some spectral colours can also be produced by mixing two wavelengths of light together.
Understanding the diagram:
  • Above the line of coloured circles are the wavelengths of light that produce each spectral colour.
  • Of ...

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Combining Red, Green and Blue Light

Combining Red, Green and Blue Light

This diagram explains when red, green and blue primary colours are projected onto a dark surface so that they overlap.

What you need to remember:
  • Mixing different wavelengths of light to produce other colours, is called additive colour or an additive approach to colour.
  • Red, green and blue (RGB) are additive primary colours. This means that when ...

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Why an Object Appears Magenta in Sunlight

Why an Object Appears Magenta in Sunlight

This is one of a set of 10 diagrams exploring why objects appear to be different colours to an observer.

There are always three key factors that affect the colour of anΒ object.

  • The first is the type of light source and what happens to the light on its journey towards an object.
  • The second is ...

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Frequency of Electromagnetic Waves

Frequency of Electromagnetic Waves

This diagram looks at the frequency of electromagnetic waves.
  • It shows that the frequency of electromagnetic radiation (light) refers to the number of wave-cycles of an electromagnetic wave that pass a given point in a given amount of time.
  • The frequency of an electromagnetic wave can be thought about in the same way as the frequency of trains that ...

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Wavelength and the Electromagnetic Spectrum

Wavelength and the Electromagnetic Spectrum

This diagram shows that the electromagnetic spectrum includes waves with all possible wavelengths of radiation.

Notice that:
  • Wavelengths range from low energy radio waves through visible light to high energy gamma rays.
  • Waves with longer wavelengths have a lower frequency and carry less energy.
  • Waves with shorter wavelengths have a higher frequency and carry more energy.
  • ...

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Comparing Frequencies of Red and Violet

Comparing Frequencies of Red and Violet

This diagram compares the frequency of two electromagnetic waves that correspond with an observer's perception of red and violet.

It also looks at the units used when frequency is being measured. The diagram shows that the frequency of electromagnetic waves (light) refers to the number of oscillations that pass a given point in a given amount of time ...

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Comparing Wavelengths of Red and Violet

Comparing Wavelengths of Red and Violet

This diagram compares the wavelength of two electromagnetic waves that correspond with an observer's perception of red and violet.
  • The diagram also looks at the units used when wavelength is being measured.
  • Notice that the wavelength of the red wave is much longer than the violet wave.
  • The wave cycle is measured from peak to peak and is ...

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Features of Electromagnetic Waves

Features of Electromagnetic Waves

This diagram shows the key features of electromagnetic (light) waves and introduces some of the terms used to describe them.
  • Across the centre is an electromagnetic wave, shown in red.
  • The wave is travelling from left to right.
  • The different features of the wave are shown by labels.
  • At the bottom of the diagram are short definitions of key ...

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Continuous Colour from Red to Violet

Continuous Colour from Red to Violet

This diagram shows six electromagnetic waves. Each wave corresponds with a colour within the visible spectrum that an observer might recognise.

Remember that:
  • Electromagnetic waves, which are a form of electromagnetic radiation, propagating from a light source, travel through space and encounter different materials.
  • Colour is not a property of electromagnetic radiation, but an aspect of visual ...

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Wavelengths from Red to Violet

Wavelengths from Red to Violet

This diagram is about which wavelengths of electromagnetic radiation correspond with the different colours we see in the world.

It shows that whilst the visible spectrum often appears to an observer to be made up of six bands of colour, every wavelength between 700 and 380 nanometres corresponds with a different colour.

The scale along the ...

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Bands of Colour from Red to Violet

Bands of Colour from Red to Violet

This diagram is about the fact that wavelengths of light within the visible spectrum often appear to form bands of colour.
  • Every wavelength of electromagnetic radiation (light) corresponds with a different colour we see in the world.
  • When an observer sees a continuous range of wavelengths they see bands of colour.
  • When all wavelengths within the visible spectrum are ...

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Facts about the Sun

Facts about the Sun

This diagram introduces the Sun, the star at the centre of our solar system. It gathers together some useful facts that help explain why the Sun is so important in our lives. Remember that:
  • The sun is unlike anything else in our experience. Its age, size, temperature are all on a scale apart from life on planet Earth.
  • It ...

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Facts about Sunlight

Facts about Sunlight

This diagram introduces sunlight, the light produced by the Sun, the star at the centre of our solar system.

It gathers together some useful facts and introduces some important terms that you can check out in the next section.

Remember that:
  • As the Sun explodes with the force of a billion one-megaton nuclear bombs every ...

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Comparing Wavelengths: Radio to Gamma

Comparing Wavelengths: Radio to Gamma

This diagram compares the wavelength of four electromagnetic waves and arranges them according to their position within the electromagnetic spectrum.
  • Radio waves are shown at the top. They have the longest wavelength of the four types. These waves are shown as dull red. They are invisible to the human eye.
  • Red has the longest wavelength of the visible part ...

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Facts about White Light

Facts about White Light

This diagram introduces white light, the name given to light that contains all wavelength of the visible spectrum.

Work through the list of key facts on the diagram.

Remember that:
  • White light contains all the wavelengths of the visible spectrum.
  • White light contains all wavelengths of light that correspond with the colours of the rainbow.
  • ...

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The Visible Spectrum

The Visible Spectrum

This diagram is about sunlight, the visible spectrum and which wavelengths of electromagnetic radiation correspond with the different colours we see in the world.

The diagram shows that wavelengths of light within the visible spectrum correspond with the different colours we see in the world.

Notice that:
  • The white arrows in the diagram represent the ...

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Wavelengths from Red to Violet

Wavelengths from Red to Violet

This diagram is about which wavelengths of electromagnetic radiation correspond with the different colours we see in the world.

The important fact to remember is that the wavelengths of light within the visible spectrum correspond with all the colours that we see between red and violet.
  • The white arrows in the diagram show the Sun emitting sunlight ...

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