1- What is the relationship between A and %T? Why do we measure A units instead of %T?
1- What is the relationship between A and %T? Why do we measure A units instead of %T?
· A = 2- log %T
· %T = percent transmittance
· A = absorbance. At 100%T, A = 0.
- It makes more sense to use absorbance because when you are measuring concentrations, as concentrations increase, absorbance will proportionally increase as well. Transmittance would decrease with increased concentrations.