What is Absorption: Definition and 531 Discussions

Absorption spectroscopy refers to spectroscopic techniques that measure the absorption of radiation, as a function of frequency or wavelength, due to its interaction with a sample. The sample absorbs energy, i.e., photons, from the radiating field. The intensity of the absorption varies as a function of frequency, and this variation is the absorption spectrum. Absorption spectroscopy is performed across the electromagnetic spectrum.
Absorption spectroscopy is employed as an analytical chemistry tool to determine the presence of a particular substance in a sample and, in many cases, to quantify the amount of the substance present. Infrared and ultraviolet–visible spectroscopy are particularly common in analytical applications. Absorption spectroscopy is also employed in studies of molecular and atomic physics, astronomical spectroscopy and remote sensing.
There are a wide range of experimental approaches for measuring absorption spectra. The most common arrangement is to direct a generated beam of radiation at a sample and detect the intensity of the radiation that passes through it. The transmitted energy can be used to calculate the absorption. The source, sample arrangement and detection technique vary significantly depending on the frequency range and the purpose of the experiment.
Following are the major types of absorption spectroscopy:

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  1. J

    Possibility of optical absorption by defect level in bandgap

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  2. neilparker62

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  3. H

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  4. Z

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  5. M

    Absorption and emission of light

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  6. A

    Shock absorption properties better from casting or forging?

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  7. K

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  8. P

    Absorption in Indirect Bandgaps

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  9. Z

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  10. D

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  11. Z

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  12. N

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  13. D

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  14. B

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  15. B

    What gases can be absorbed between 800 and 1000nm wavelength?

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  16. C

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  17. D

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  18. D

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  19. P

    Why objects reflect light instead of absorbing or transmitti

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  20. L

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  21. A

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  22. D

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  24. S

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  25. R

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  27. R

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  28. M

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  29. K

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  30. TESL@

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  32. F

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  33. R

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  34. R

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  35. W

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  36. Q

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  37. Basimalasi

    What is the absorption coefficient of black-colored water?

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  38. P

    Why Are Absorption Cross Sections Larger for Atoms Than for Molecules?

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  39. T

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  40. A

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  41. kelvin490

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  42. R

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  43. R

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  44. M

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  45. O

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  46. P

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  47. N

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  48. R

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  49. P

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  50. A

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