Skip to main content
Chemistry LibreTexts

Absorbance

[ "article:topic", "authorname:ggunawardena" ]
  • Page ID
    16548
  • The absorbance (symbol: A), usually the y axis of a uv spectrum, is defined as follows.

     

    absorbance1.png

     

    If the sample absorbs no light,

     

    absorbance2.png

     

    If the sample absorbs light,

     

     

    Thus, the greater the amount of the light absorbed by the sample, the larger the absorbance.