| 释义 |
transmittance
trans·mit·tance T0321800 (trăns-mĭt′ns, trănz-)n.1. A transmission.2. Physics The ratio of the radiant energy transmitted to the total radiant energy incident on a given body.transmittance (trænzˈmɪtəns) n1. the act of transmitting2. (General Physics) physics Also called: transmission factor 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. Symbol: τ Compare reflectance, absorptancetrans•mit•tance (trænsˈmɪt ns, trænz-)
n. Physics. the ratio of the radiant flux transmitted through and emerging from a body to the total flux incident on it: equivalent to 1 minus the absorptance. [1850–55] Thesaurus| Noun | 1. |  transmittance - the fraction of radiant energy that passes through a substancetransmissioncoefficient - a constant number that serves as a measure of some property or characteristic |
TranslationsTransmittance
transmittance[tranz′mid·əns] (analytical chemistry) During absorption spectroscopy, the amount of radiant energy transmitted by the solution under analysis. (electromagnetism) The radiant power transmitted by a body divided by the total radiant power incident upon the body. Also known as transmission. TransmittanceThe ratio of the total radiant or luminous flux transmitted by a transparent object to the incident flux, usually given for normal incidence.transmittanceWhen radiant flux is incident on a medium, the ratio of the flux which emerges from the medium to the flux which is incident upon it.transmittance
transmittance A measure of transmission expressed as the ratio of the intensity of the transmitted light I′ to the intensity of the incident light I, for a specified wavelength, i.e. T = I′/I. It is usually given as a percentage, i.e. T = I′/I ✕ 100. Syn. total transmittance. See absorbance; optical density.AcronymsSeeTtransmittance
Related to transmittance: absorbance, Thermal transmittanceSynonyms for transmittancenoun the fraction of radiant energy that passes through a substanceSynonymsRelated Words |