Difference between revisions of "Lens"
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: There is a [[lens]] in the [[eye]] that is used to [[focus]] an [[image]] onto the [[retina]]. | : There is a [[lens]] in the [[eye]] that is used to [[focus]] an [[image]] onto the [[retina]]. | ||
: Glass [[lens]]es can be moved relative to a screen until an [[image]] is [[focus]]ed but the [[lens]] in the [[eye]] can change shape to [[focus]] light. | : Glass [[lens]]es can be moved relative to a screen until an [[image]] is [[focus]]ed but the [[lens]] in the [[eye]] can change shape to [[focus]] light. | ||
| + | |||
| + | ===References=== | ||
| + | ====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 ''Lens; concave, pages 191, 228-9, GCSE Physics; Student Book, Collins, 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 ''Lens; convex, pages 191, 228-31, GCSE Physics; Student Book, Collins, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Lenses, concave, page 206, GCSE Physics, Hodder, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/0198359373/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359373&linkCode=as2&tag=nrjc-21&linkId=952a73bbb09d222ecc4b50d200679849 ''Lenses, pages 154-157, GCSE Biology; Third Edition, Oxford University Press, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945954/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945954&linkCode=as2&tag=nrjc-21&linkId=100574c08fbbb64318256eb79ed61a76 ''Lenses, pages 195, 196, 198, GCSE Biology, CGP, 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 ''Lenses, pages 208-211, GCSE Physics; Third Edition, Oxford University Press, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Lenses, pages 70, 71, GCSE Biology; The Revision Guide, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac273 ''Lenses, pages 82-84, GCSE Physics; The Revision Guide, 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 ''Lenses; comparison, pages 274, 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 ''Lenses; concave, pages 267, 268, 273, 274, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac274 ''Lenses; concave, pages 82, 84, GCSE Physics; The Revision Guide, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Lenses; convex, pages 203-6, GCSE Physics, Hodder, 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 ''Lenses; convex, pages 266, 267, 270-272, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac275 ''Lenses; convex, pages 82-84, GCSE Physics; The Revision Guide, 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 ''Lenses; magnification, pages 275, 276, 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 ''Lenses; ray diagrams, pages 270-273, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Lenses; refraction of light, page 203, GCSE Physics, Hodder, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945954/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945954&linkCode=as2&tag=nrjc-21&linkId=100574c08fbbb64318256eb79ed61a76 ''Lenses; replacement, page 199, GCSE Biology, CGP, AQA ''] | ||
Revision as of 02:05, 8 November 2019
Contents
Key Stage 3
Meaning
A lens is a shaped piece of glass, or other transparent material, that can be used to focus an image of an object.
About Lenses
- A lens can be convex or concave.
- There is a lens in the eye that is used to focus an image onto the retina.
- Glass lenses can be moved relative to a screen until an image is focused but the lens in the eye can change shape to focus light.
Key Stage 4
Meaning
A lens is a shaped piece of glass, or other transparent material, that can be used to focus an image of an object.
About Lenses
- A lens can be convex, also called a converging lens or concave, also called a diverging lens.
- Lenses can be used to create a real image by focussing light onto a screen, or they can create a virtual image by looking through the lens.
- The shape of the lens determines its focal length. For a convex lens (converging lens) the focal length can be found by focussing the image of a "distant object" onto a screen. The distance between the screen and lens is the focal length.
- There is a lens in the eye that is used to focus an image onto the retina.
- Glass lenses can be moved relative to a screen until an image is focused but the lens in the eye can change shape to focus light.
References
AQA
- Lens; concave, pages 191, 228-9, GCSE Physics; Student Book, Collins, AQA
- Lens; convex, pages 191, 228-31, GCSE Physics; Student Book, Collins, AQA
- Lenses, concave, page 206, GCSE Physics, Hodder, AQA
- Lenses, pages 154-157, GCSE Biology; Third Edition, Oxford University Press, AQA
- Lenses, pages 195, 196, 198, GCSE Biology, CGP, AQA
- Lenses, pages 208-211, GCSE Physics; Third Edition, Oxford University Press, AQA
- Lenses, pages 70, 71, GCSE Biology; The Revision Guide, CGP, AQA
- Lenses, pages 82-84, GCSE Physics; The Revision Guide, CGP, AQA
- Lenses; comparison, pages 274, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
- Lenses; concave, pages 267, 268, 273, 274, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
- Lenses; concave, pages 82, 84, GCSE Physics; The Revision Guide, CGP, AQA
- Lenses; convex, pages 203-6, GCSE Physics, Hodder, AQA
- Lenses; convex, pages 266, 267, 270-272, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
- Lenses; convex, pages 82-84, GCSE Physics; The Revision Guide, CGP, AQA
- Lenses; magnification, pages 275, 276, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
- Lenses; ray diagrams, pages 270-273, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
- Lenses; refraction of light, page 203, GCSE Physics, Hodder, AQA
- Lenses; replacement, page 199, GCSE Biology, CGP, AQA