File:Spectroscopy overview.svg
Summary
An overview of <a href="https://en.wikipedia.org/wiki/electromagnetic_radiation" class="extiw" title="en:electromagnetic radiation">electromagnetic radiation</a> <a href="https://en.wikipedia.org/wiki/absorption_spectroscopy" class="extiw" title="en:absorption spectroscopy">absorption</a>. This example discusses the general principle using <a href="https://en.wikipedia.org/wiki/Visible_spectrum" class="extiw" title="en:Visible spectrum">visible light</a> as specific example. A white beam <a href="https://en.wikipedia.org/wiki/light_source" class="extiw" title="en:light source">source</a> -- emitting light of multiple <a href="https://en.wikipedia.org/wiki/wavelength" class="extiw" title="en:wavelength">wavelengths</a> -- is focused on a sample (the <a href="https://en.wikipedia.org/wiki/complementary_color" class="extiw" title="en:complementary color">complementary color</a> pairs are indicated by the yellow dotted lines. Upon striking the sample, <a href="https://en.wikipedia.org/wiki/photons" class="extiw" title="en:photons">photons</a> that match the energy gap of the <a href="https://en.wikipedia.org/wiki/molecule" class="extiw" title="en:molecule">molecules</a> present (green light in this example) are absorbed in order to excite the molecule. Other photons transmit unaffected and, if the radiation is in the visible region (400-700nm), the transmitted light appears as its complementary color. By comparing the <a href="https://en.wikipedia.org/wiki/attenuation" class="extiw" title="en:attenuation">attenuation</a> of the transmitted light with the incident, an <a href="https://en.wikipedia.org/wiki/Absorption_spectroscopy" class="extiw" title="en:Absorption spectroscopy">absorption spectrum</a> can be obtained.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:44, 7 January 2017 | | 760 × 303 (2.63 MB) | 127.0.0.1 (talk) | <b>An overview of <a href="https://en.wikipedia.org/wiki/electromagnetic_radiation" class="extiw" title="en:electromagnetic radiation">electromagnetic radiation</a> <a href="https://en.wikipedia.org/wiki/absorption_spectroscopy" class="extiw" title="en:absorption spectroscopy">absorption</a></b>. This example discusses the general principle using <a href="https://en.wikipedia.org/wiki/Visible_spectrum" class="extiw" title="en:Visible spectrum">visible light</a> as specific example. A white beam <a href="https://en.wikipedia.org/wiki/light_source" class="extiw" title="en:light source">source</a> -- emitting light of multiple <a href="https://en.wikipedia.org/wiki/wavelength" class="extiw" title="en:wavelength">wavelengths</a> -- is focused on a sample (the <a href="https://en.wikipedia.org/wiki/complementary_color" class="extiw" title="en:complementary color">complementary color</a> pairs are indicated by the yellow dotted lines. Upon striking the sample, <a href="https://en.wikipedia.org/wiki/photons" class="extiw" title="en:photons">photons</a> that match the energy gap of the <a href="https://en.wikipedia.org/wiki/molecule" class="extiw" title="en:molecule">molecules</a> present (green light in this example) are <i>absorbed</i> in order to excite the molecule. Other photons transmit unaffected and, if the radiation is in the visible region (400-700nm), the transmitted light appears as its complementary color. By comparing the <a href="https://en.wikipedia.org/wiki/attenuation" class="extiw" title="en:attenuation">attenuation</a> of the transmitted light with the incident, an <a href="https://en.wikipedia.org/wiki/Absorption_spectroscopy" class="extiw" title="en:Absorption spectroscopy">absorption spectrum</a> can be obtained. |
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