Difference between revisions of "Absorb (physics)"
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===About Absorption=== | ===About Absorption=== | ||
− | [[Absorb|Absorbtion]] involves the transfer of [[energy]] from the [[electromagnetic | + | [[Absorb|Absorbtion]] involves the transfer of [[energy]] from the [[Electromagnetic Wave|electromagnetic wave]] to the material. |
It can occur in various forms, such as the [[absorption]] of light, sound, or [[radiation]]. | It can occur in various forms, such as the [[absorption]] of light, sound, or [[radiation]]. | ||
[[Material]]s have specific [[Asborption Spectra|absoption spectra]] indicating which [[wavelengths]] they [[Absorb (Physics)|absorb]]. | [[Material]]s have specific [[Asborption Spectra|absoption spectra]] indicating which [[wavelengths]] they [[Absorb (Physics)|absorb]]. | ||
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===Examples=== | ===Examples=== | ||
Solar panels [[Absorb (Physics)|absorb]] sunlight to convert it into electricity. | Solar panels [[Absorb (Physics)|absorb]] sunlight to convert it into electricity. | ||
Dark-[[colour]]ed [[object]]s [[Absorb (Physics)|absorb]] more [[Visible Light|visible light]] and therefore [[heat]] up faster than light-[[colour]]ed [[object]]s. | Dark-[[colour]]ed [[object]]s [[Absorb (Physics)|absorb]] more [[Visible Light|visible light]] and therefore [[heat]] up faster than light-[[colour]]ed [[object]]s. |
Revision as of 16:50, 17 May 2024
Contents
Key Stage 3
Meaning
Absorption is when the energy being transferred by a wave is taken into an energy store of a material.
Key Stage 4
Meaning
Absorption is when the energy being transmitted by a wave is taken into an energy store of a material.
About Absorption
- When a wave is absorbed the wave ceases to exist and the energy being transmitted by that wave increases an energy store of the absorbing material.
- Absorption happens at the interface between two media.
- Black objects absorb light increasing their thermal energy store.
- Soft objects absorb sound increasing their thermal energy store.
- The colour of an object is caused by some frequencies of light being absorbed while others are reflected.
References
AQA
- Absorption of waves, pages 189-90, 195, GCSE Physics, Hodder, AQA
- Absorption, pages 27-29, 179, 206-207, GCSE Physics; Third Edition, Oxford University Press, AQA
- Absorption; lines, page 111, GCSE Physics; Student Book, Collins, AQA
Edexcel
- Absorbed waves, page 56, GCSE Physics, Pearson Edexcel
- Absorption of radiation, page 320, GCSE Combined Science, Pearson Edexcel
- Absorption of radiation, page 38, GCSE Physics, Pearson Edexcel
- Absorption of waves, pages 98, 128, 141-144, GCSE Physics, CGP, Edexcel
- Absorption of waves; colour of objects, page 137, GCSE Physics, CGP, Edexcel
- Absorption spectra, pages 191, 192, GCSE Physics, CGP, Edexcel
- Absorption spectrum, page 359, GCSE Combined Science, Pearson Edexcel
- Absorption spectrum, page 95, GCSE Physics, Pearson Edexcel
- Absorption, pages 34, 40, GCSE Physics; The Revision Guide, CGP, Edexcel
OCR
Key Stage 5
Meaning
Absorbtion is the process where matter takes in photons, particles, or energy.
About Absorption
Absorbtion involves the transfer of energy from the electromagnetic wave to the material. It can occur in various forms, such as the absorption of light, sound, or radiation. Materials have specific absoption spectra indicating which wavelengths they absorb.
Examples
Solar panels absorb sunlight to convert it into electricity. Dark-coloured objects absorb more visible light and therefore heat up faster than light-coloured objects.