What is Transmittance ?

Encyclopedia
07/27/2024


What is  Transmittance ?


Transmittance Definition


Transmittance is the ratio of light intensity passing through a material to the light intensity hitting the material’s surface.



Transmittance Formula


It is calculated by dividing the intensity of the light that passes through the object by the intensity of the incident light

.

 


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Radiant Flux Formula


Another way to calculate transmittance is by dividing the transmitted radiant flux by the received radiant flux.


 

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Absorbance Relationship


According to Beer-Lambert law, absorbance is equal to two minus the logarithm base ten of the percentage transmittance.


 

Applications of Transmittance


  • Measuring concentrations of chemicals in solutions

  • Water clarity

  • Grade of syrup

  • Testing window tint films and glass clarity

  • Atmospheric haze



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