Definition, Meaning & Synonyms

transmittance

noun

/trænzˈmɪtəns/

Definition

The measure of the amount of light or other electromagnetic radiation that passes through a substance compared to the amount of radiation that is incident on it.

Examples

The transmittance of the glass window allows natural light to illuminate the room.
In optical materials, high transmittance is often desired for clear visibility.
The researchers measured the transmittance of the film to determine its effectiveness in blocking UV rays.

Meaning

Transmittance indicates how much of an incoming signal or light wave is transmitted through a medium, such as glass or water, and is vital in fields like optics and telecommunications.