- 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.
Origin of transmittance
Also called transmission.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Related Wordstransfer, transition, flow, journey, progress, passing, trip, change, movement, voyage, trek, progression, advance, transmission, transit, traverse, motion, tour, crossing, conversion
Examples from the Web for transmittance
Music fills all which contains life, and uses all materials for its transmittance.Seed Thoughts for Singers
Frank Herbert Tubbs
- the act of transmitting
- Also called: transmission factor 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 transmittanceSymbol: τ Compare reflectance, absorptance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for transmittance
Online Etymology Dictionary, © 2010 Douglas Harper