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Home > Transmittance

In the fields of optics and spectroscopy, transmittance is the fraction of incident light at a specified wavelength that passes through a sample. The transmittance T of a sample is defined as
,

where is the intensity of the incident light and I is the intensity of the light coming out of the sample. Transmittance is related to absorbance A as

Note that the term transmission refers to the physical process of light passing through a sample, whereas transmittance refers to the mathematical quantity.



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TransmittanceIn the fields of optics and spectroscopy, transmittance is the fraction of incident light at a specified wavelength that passes through a sample. The transmittance T of a sample is defined as :, where is the intensity of the incident light and I is the in  
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