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Difference between revisions of "Reflection"

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|[[File:Fabric.png|center|200px]]
 
|[[File:Fabric.png|center|200px]]
 
|-
 
|-
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| style="height:20px; width:200px; text-align:center;" |[[Specular Reflection]] from the [[glass]] makes an [[image]] of the [[sky]] in the [[glass]].
+
| style="height:20px; width:200px; text-align:center;" |[[Specular Reflection]] from the [[glass]] makes an [[image]] of the sky in the [[glass]].
 
| style="height:20px; width:200px; text-align:center;" |[[Diffuse Reflection]] from the [[fabric]] is how [[light]] gets from the [[fabric]] to our [[eyes]] to see it.
 
| style="height:20px; width:200px; text-align:center;" |[[Diffuse Reflection]] from the [[fabric]] is how [[light]] gets from the [[fabric]] to our [[eyes]] to see it.
 
|}
 
|}
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==Key Stage 3==
 
==Key Stage 3==
 
===Meaning===
 
===Meaning===
−
[[Reflection]] is when a wave bounces off a surface.
+
[[Reflection]] is when a [[wave]] bounces off a surface.
  
 
===About Reflection===
 
===About Reflection===
 
: All [[wave]]s can be '''reflected'''.
 
: All [[wave]]s can be '''reflected'''.
−
: The [[reflection]] of [[sound]] is called an echo.
+
: The [[reflection]] of [[sound]] is called an [[echo]].
  
 
===The Law of Reflection===
 
===The Law of Reflection===
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| style="height:20px; width:200px; text-align:center;" |[[Diffuse Reflection]] happens from a rough surface.
 
| style="height:20px; width:200px; text-align:center;" |[[Diffuse Reflection]] happens from a rough surface.
 
|}
 
|}
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 +
==Key Stage 4==
 +
===Meaning===
 +
[[Reflection]] is when a [[wave]] bounces off the [[interface]] between two [[medium|media]].
 +
 +
===About Reflection===
 +
: All [[wave]]s can be '''reflected''' (eg [[Light|Light Waves]], [[Water Wave]]s, [[Ultrasound|Ultrasound Wave]]s, [[X-ray]]s).
 +
: [[Reflection]] takes place at the [[interface]] between two [[medium|media]].
 +
: For [[opaque]] [[material]]s [[reflection]] depends on the [[colour]] of the [[material]]. Rough [[opaque]] [[material]]s such as paper will [[Diffuse Reflection|diffusely reflect]] and smooth [[opaque]] [[material]]s will [[Specular Reflection|specularly reflect]] such as [[metal]]s.
 +
: For [[transparent]] [[material]]s the chance of [[reflection]] at an [[interface]] depends upon the relative [[property|properties]] of those two [[medium|media]] and the [[Angle of Incidence]]. [[Wave]]s that arrive at an [[interface]] where there is a large difference in [[density]] or [[Refractive Index|refractive index]] are more likely to be '''reflected'''.
 +
: [[Electromagnetic Wave|Electromagnetic waves]] travelling through a more [[Optical Density|optically dense]] [[medium]] will engage in 'total internal reflection' at the [[interface]] with a less [[Optical Density|optically dense]] [[medium]].
 +
 +
===The Law of Reflection===
 +
: The Law of '''reflection''' states that the [[Angle of Incidence|angle of incidence]] is equal to the [[Angle of Reflection|angle of reflection]].
 +
{| class="wikitable"
 +
|-
 +
|[[File:ReflectionDiagram.png|center|500px]]
 +
|-
 +
| style="height:20px; width:200px; text-align:center;" |The [[angle]] between the [[Incident Ray|incident ray]] and the [[normal]] ([[Angle of Incidence|angle of incidence]]) is the same as the [[angle]] between the [[Reflected Ray|reflected ray]] and the [[normal]] ([[Angle of Reflection|angle of reflection]]).
 +
|}
 +
 +
===Specular and Diffuse Reflection===
 +
: [[Reflection]] of [[Electromagnetic Wave]]s can be [[Specular Reflection|specular]] or [[Diffuse Reflection|diffuse]].
 +
: [[Specular Reflection]] happens from a shiny, smooth surface and makes an [[image]].
 +
: [[Diffuse Reflection]] happens from a dull, rough surface sending the [[Reflected Ray|reflected rays]] in different directions.
 +
 +
{| class="wikitable"
 +
|-
 +
|[[File:SpecularReflectionDiagram.png|center|300px]]
 +
|[[File:DiffuseReflectionDiagram.png|center|300px]]
 +
|-
 +
| style="height:20px; width:200px; text-align:center;" |[[Specular Reflection]] happens from a smooth surface.
 +
| style="height:20px; width:200px; text-align:center;" |[[Diffuse Reflection]] happens from a rough surface.
 +
|}
 +
 +
===References===
 +
====AQA====
 +
 +
 +
:[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Reflection, pages 178-179, 184-185, 195, 202-203, 206-207, GCSE Physics; Third Edition, Oxford University Press, AQA '']
 +
:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Reflection, pages 190-1, 202-5, 211, 214, 224-7, 234-15, GCSE Physics; Student Book, Collins, AQA '']
 +
:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Reflection, pages 235, 236, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
 +
:[https://www.amazon.co.uk/gp/product/1471851362/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851362&linkCode=as2&tag=nrjc-21&linkId=7d78d70a2044ee9982dae010c94af92a ''Reflection, pages 263, GCSE Combined Science Trilogy 2, Hodder, AQA '']
 +
:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Reflection; diffuse, page 204, GCSE Physics; Student Book, Collins, AQA '']
 +
:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Reflection; diffuse, page 236, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
 +
:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Reflection; investigating, page 238, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
 +
:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Reflection; partial reflection, page 282, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
 +
:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Reflection; specular, page 204, GCSE Physics; Student Book, Collins, AQA '']
 +
:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Reflection; specular, page 235, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
 +
 +
====Edexcel====
 +
 +
:[https://www.amazon.co.uk/gp/product/1782945741/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945741&linkCode=as2&tag=nrjc-21&linkId=30da4f2178da182547b62a7329d13b57 ''Reflection, page 166, GCSE Combined Science; The Revision Guide, CGP, Edexcel '']
 +
:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Reflection, page 66, GCSE Physics, Pearson Edexcel '']
 +
:[https://www.amazon.co.uk/gp/product/1782945733/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945733&linkCode=as2&tag=nrjc-21&linkId=2a2dbec9db6bf5766c0458d908fa0a52 ''Reflection, pages 34-36, 38, 40, GCSE Physics; The Revision Guide, CGP, Edexcel '']
 +
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Reflection, pages 98, 115, 116, GCSE Physics, CGP, Edexcel '']
 +
:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Reflection; diffuse, page 68, GCSE Physics, Pearson Edexcel '']
 +
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Reflection; partial reflection, page 106, GCSE Physics, CGP, Edexcel '']
 +
:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Reflection; spectacular, page 68, GCSE Physics, Pearson Edexcel '']
 +
 +
====OCR====
 +
:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Reflection, page 189, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR '']
 +
:[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Reflection, pages 160-161, 165, 264, Gateway GCSE Physics, Oxford, OCR  '']
 +
:[https://www.amazon.co.uk/gp/product/1782945687/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945687&linkCode=as2&tag=nrjc-21&linkId=9a598e52189317a20311d7a632747bc9 ''Reflection, pages 61, 62, 64, 65, Gateway GCSE Physics; The Revision Guide, CGP, OCR  '']

Latest revision as of 18:00, 18 December 2019

Key Stage 2

Meaning

Reflection is when light bounces off a surface.

About Reflection

Reflection can be specular or diffuse.
Specular Reflection happens from a shiny surface and makes an image (you can see a 'reflection').
Diffuse Reflection happens from a dull surface and is how we see all objects.
ReflectionGlass.png
Fabric.png
Specular Reflection from the glass makes an image of the sky in the glass. Diffuse Reflection from the fabric is how light gets from the fabric to our eyes to see it.

Key Stage 3

Meaning

Reflection is when a wave bounces off a surface.

About Reflection

All waves can be reflected.
The reflection of sound is called an echo.

The Law of Reflection

The Law of reflection states that the angle of incidence is equal to the angle of reflection.
ReflectionDiagram.png
The angle between the incident ray and the normal (angle of incidence) is the same as the angle between the reflected ray and the normal (angle of reflection).

Specular and Diffuse Reflection

Reflection of light can be specular or diffuse.
Specular Reflection happens from a shiny surface and makes an image (you can see a 'reflection').
Diffuse Reflection happens from a dull surface and is how we see all objects.
SpecularReflectionDiagram.png
DiffuseReflectionDiagram.png
Specular Reflection happens from a smooth surface. Diffuse Reflection happens from a rough surface.

Key Stage 4

Meaning

Reflection is when a wave bounces off the interface between two media.

About Reflection

All waves can be reflected (eg Light Waves, Water Waves, Ultrasound Waves, X-rays).
Reflection takes place at the interface between two media.
For opaque materials reflection depends on the colour of the material. Rough opaque materials such as paper will diffusely reflect and smooth opaque materials will specularly reflect such as metals.
For transparent materials the chance of reflection at an interface depends upon the relative properties of those two media and the Angle of Incidence. Waves that arrive at an interface where there is a large difference in density or refractive index are more likely to be reflected.
Electromagnetic waves travelling through a more optically dense medium will engage in 'total internal reflection' at the interface with a less optically dense medium.

The Law of Reflection

The Law of reflection states that the angle of incidence is equal to the angle of reflection.
ReflectionDiagram.png
The angle between the incident ray and the normal (angle of incidence) is the same as the angle between the reflected ray and the normal (angle of reflection).

Specular and Diffuse Reflection

Reflection of Electromagnetic Waves can be specular or diffuse.
Specular Reflection happens from a shiny, smooth surface and makes an image.
Diffuse Reflection happens from a dull, rough surface sending the reflected rays in different directions.
SpecularReflectionDiagram.png
DiffuseReflectionDiagram.png
Specular Reflection happens from a smooth surface. Diffuse Reflection happens from a rough surface.

References

AQA

Reflection, pages 178-179, 184-185, 195, 202-203, 206-207, GCSE Physics; Third Edition, Oxford University Press, AQA
Reflection, pages 190-1, 202-5, 211, 214, 224-7, 234-15, GCSE Physics; Student Book, Collins, AQA
Reflection, pages 235, 236, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
Reflection, pages 263, GCSE Combined Science Trilogy 2, Hodder, AQA
Reflection; diffuse, page 204, GCSE Physics; Student Book, Collins, AQA
Reflection; diffuse, page 236, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
Reflection; investigating, page 238, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
Reflection; partial reflection, page 282, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
Reflection; specular, page 204, GCSE Physics; Student Book, Collins, AQA
Reflection; specular, page 235, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA

Edexcel

Reflection, page 166, GCSE Combined Science; The Revision Guide, CGP, Edexcel
Reflection, page 66, GCSE Physics, Pearson Edexcel
Reflection, pages 34-36, 38, 40, GCSE Physics; The Revision Guide, CGP, Edexcel
Reflection, pages 98, 115, 116, GCSE Physics, CGP, Edexcel
Reflection; diffuse, page 68, GCSE Physics, Pearson Edexcel
Reflection; partial reflection, page 106, GCSE Physics, CGP, Edexcel
Reflection; spectacular, page 68, GCSE Physics, Pearson Edexcel

OCR

Reflection, page 189, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR
Reflection, pages 160-161, 165, 264, Gateway GCSE Physics, Oxford, OCR
Reflection, pages 61, 62, 64, 65, Gateway GCSE Physics; The Revision Guide, CGP, OCR
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