What is Transmittance ?Transmittance DefinitionTransmittance is the ratio of light intensity passing through a material to the light intensity hitting the material’s surface.Transmittance FormulaIt is calculated by dividing the intensity of the light that passes through the object by the intensity of the incident light.Radiant Flux FormulaAnother way to calculate transmittance is by dividing the transmitted radiant flux by the received radiant flux.Absorbance RelationshipAccording to Beer-Lamber