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Absorptivity vs Absorbance - What's the difference?

absorptivity | absorbance |

As nouns the difference between absorptivity and absorbance

is that absorptivity is the quality of being absorptive; absorptiveness while absorbance is a logarithmic measure of the amount of light that is absorbed when passing through a substance; the capacity of a substance to absorb light of a given wavelength; optical density.

absorptivity

English

Noun

(absorptivities)
  • The quality of being absorptive; absorptiveness.
  • (thermodynamics) The fraction of radiation absorbed by a surface to the total radiation incident on the surface.
  • (analytical chemistry) The constant a in the Beer's law relation A = abc, where A is the absorbance, b the path length, and c the concentration of solution. Also known as absorptive power. Formerly known as absorbency index; absorption constant; extinction coefficient.

    • Synonyms

    * absorption coefficient * absorption factor

    References

    absorbance

    English

    Noun

    (wikipedia absorbance) (en noun)
  • (physics) A logarithmic measure of the amount of light that is absorbed when passing through a substance; the capacity of a substance to absorb light of a given wavelength; optical density.

    • References

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