transmittance

[trans-mit-ns, tranz-]

noun

1. Physics.,  the ratio of the radiant flux transmitted through and emerging from a body to the total flux incident on it: equivalent to one minus the absorptance.

transmittance

/ trænzˈmɪtəns /

noun

1. the act of transmitting

2. Also called: transmission factor.  τ. physics a measure of the ability of anything to transmit radiation, equal to the ratio of the transmitted flux to the incident flux; the reciprocal of the opacity. For a plate of material the ratio of the flux leaving the entry surface to that reaching the exit surface is the internal transmittance Compare reflectance absorptance

Other Word Forms

• nontransmittance noun

Word History and Origins

Origin of transmittance¹

First recorded in 1850–55; transmit + -ance

Example Sentences

Additionally, the material showed a high spectral transmittance, or transparency, of 95 percent.

From Science Daily

This effect leads to a change in transmittance depending on the direction in which the light travels.

From Science Daily

Vivo says it’s managed to increase the light transmittance of that portion of the screen by six times, while relying on algorithmic optimizations to improve image quality.

From The Verge

Go for as much visible transmittance as you can get at the U-factor you need.

From Washington Post

The crystals show near-perfect light transmittance and ultrahigh piezoelectricity — a property associated with the coupling of electric fields and mechanical strain.

From Nature

Related Words

• change 
• flow 
• journey 
• movement 
• passing 
• progress 
• transfer 
• transition 
• trip