Difference between revisions of "Absorption Spectra"
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| style="height:20px; width:200px; text-align:center;" |This [[diagram]] shows an [[electron]] gaining [[energy]] by [[Absorb (Physics)|absorbing]] an [[Electromagnetic Wave|electromagnetic wave]] and becoming [[excited]] (moving to a higher [[Energy Level|energy level]]). | | style="height:20px; width:200px; text-align:center;" |This [[diagram]] shows an [[electron]] gaining [[energy]] by [[Absorb (Physics)|absorbing]] an [[Electromagnetic Wave|electromagnetic wave]] and becoming [[excited]] (moving to a higher [[Energy Level|energy level]]). | ||
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| + | ==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 ''Absorption; lines, page 111, GCSE Physics; Student Book, Collins, AQA'] | ||
Revision as of 17:37, 27 October 2019
Key Stage 4
Meaning
Absorption spectra are the specific wavelengths of light absorbed by the electrons in atoms as they gain energy.
About Absorption Spectra
- An absorption spectrum is made by passing white light through a material or reflecting it off a material then sending it through a prism to separate the colours.
- The spectrum of white light is a continuous change of colours with all wavelengths having the same intensity.
- An absorption spectrum is a set of specific wavelengths with a low intensity. This appears as dark lines of of missing colour from the normal spectrum made by white light.
- A absorption spectrum is created when electrons absorb the energy from an electromagnetic wave and jump to a higher energy level in an atom. This removes that particular wavelength of electromagnetic wave white light being transmitted or reflected from that material.
- The wavelengths of electromagnetic wave depend on the energy difference between the energy levels in atoms.
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| This diagram shows an electron gaining energy by absorbing an electromagnetic wave and becoming excited (moving to a higher energy level). |