Visible light: Waves in matter: Physics: GCSE (9:1)

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Last updated 12:19 AM on 6/7/26
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12 Terms

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Visible light spectrum

A spectrum of colour within the electromagnetic spectrum

<p>A spectrum of colour within the electromagnetic spectrum</p>
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Colours in order of increasing frequency

Red, orange, yellow, green, blue, indigo, violet

<p>Red, orange, yellow, green, blue, indigo, violet</p>
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Absorption of light on a surface

When light is absorbed by a surface, the energy of the wave is transferred to the particles in the surface

<p>When light is absorbed by a surface, the energy of the wave is transferred to the particles in the surface</p>
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Opaque surfaces

Surfaces that absorb some wavelengths of light so they cannot be seen and reflect the rest

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Colour of an opaque surface

Determined by which wavelengths of light are more strongly reflected

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White

The colour an opaque surface will appear because all wavelengths of light are reflected equally

<p>The colour an opaque surface will appear because all wavelengths of light are reflected equally</p>
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Black

The colour an opaque surface will appear when all wavelengths of light are absorbed

<p>The colour an opaque surface will appear when all wavelengths of light are absorbed</p>
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Transmission of light

When light is transmitted, the light continues to travel through the material

<p>When light is transmitted, the light continues to travel through the material</p>
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Transparent materials

Materials that transmit light with very little absorption

<p>Materials that transmit light with very little absorption</p>
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Translucent materials

Materials that transmit some light with some absorption

<p>Materials that transmit some light with some absorption</p>
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Coloured filter

Absorbs certain wavelengths of light and transmits other wavelengths

<p>Absorbs certain wavelengths of light and transmits other wavelengths</p>
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White light on a coloured filter

All colours are absorbed except for the colour of the filter

<p>All colours are absorbed except for the colour of the filter</p>