What is the calculation for converting between percent transmittance and absorbance?

ID documento

ID documento TE780

Data pubblicazione

Data pubblicazione 04/01/2022
Domande
What is the calculation for converting between percent transmittance and absorbance?
Sommario
Convert between percent transmittance and absorbance
Risposta
To convert a value from percent transmittance (%T) to absorbance, use the following equation:Absorbance = 2 - log(%T) Example: convert 56%T to absorbance: Example: convert 56%T to absorbance: 2 - log(56) = 0.252 absorbance units To convert a value from absorbance to percent transmittance, use the following equation:%T = antilog (2 - absorbance) Example: convert an absorbance of 0.505 to %T: antilog (2 - 0.505) = 31.3 %T

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