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What (who) is atmospheric transmittance - definition
RATIO OF TRANSMITTED TO INCIDENT RADIANT FLUX
Light transmittance; Transmitted light; Visual transmittance; Visible transmittance; Percent transmittance
![Transmittance of ruby in optical and near-IR spectra. Note the two broad blue and green absorption bands and one narrow absorption band on the wavelength of 694 nm, which is the wavelength of the [[ruby laser]].](https://commons.wikimedia.org/wiki/Special:FilePath/Ruby transmittance.svg?width=200 "Transmittance of ruby in optical and near-IR spectra. Note the two broad blue and green absorption bands and one narrow absorption band on the wavelength of 694 nm, which is the wavelength of the [[ruby laser]].")
transmittance
¦ noun Physics the ratio of the light energy falling on a body to that transmitted through it.
transmittance
n.
Transmittal, transmission.
Transmittance
Transmittance of the surface of a material is its effectiveness in transmitting radiant energy. It is the fraction of incident electromagnetic power that is transmitted through a sample, in contrast to the transmission coefficient, which is the ratio of the transmitted to incident electric field.
Wikipedia
Transmittance
Transmittance of the surface of a material is its effectiveness in transmitting radiant energy. It is the fraction of incident electromagnetic power that is transmitted through a sample, in contrast to the transmission coefficient, which is the ratio of the transmitted to incident electric field.
Internal transmittance refers to energy loss by absorption, whereas (total) transmittance is that due to absorption, scattering, reflection, etc.
