请输入您要查询的英文单词:

 

单词 transmittance
释义

transmittancen.

Etymology: formed as transmit v. + -ance suffix: compare admittance.Previous versions of the OED give the stress as: transˈmittance.
1. The action of transmitting; transmission. rare.
ΘΚΠ
the world > movement > transference > [noun] > transmission or passing on
communicationc1384
delation1578
transfusion1578
transmission1611
conveyance1646
transmitting1671
transmit1672
transmittal1735
transmittance1855
passage1860
transjection?1867
1855 in H. Clarke New Dict. Eng. Lang. ; and in later Dicts.
2. Physics. The ratio of the transmitted luminous flux to the incident luminous flux.
ΘΚΠ
the world > matter > physics > electromagnetic radiation > light > intensity of light, luminosity > [noun] > rate, ratio
transmittance1919
square law1921
luminosity1974
1919 Technologic Papers U.S. Bureau of Standards No. 119. 10 The transmittance T is defined as the fraction of radiant power transmitted by the first surface which is incident on the second surface.
1960 Illuminating Engin. 55 228/1 The concepts of transmittance and reflectance can be extended to cover the separation of specular and diffuse components which are functions of angles.
1980 Nature 29 May 313/1 We had to use a shorter path~length (970 m at Riverside and 750 m at Claremont) because of the poor optical transmittance of the polluted atmosphere at our observation sites.

Derivatives

transˈmittancy n. the ratio of the transmittance of a solution to that of a similar body of solvent.
ΘΚΠ
the world > matter > chemistry > physical chemistry > solutions > [noun] > transmittancy
transmittancy1925
1925 Jrnl. Optical Soc. Amer. 10 177 (table) Tsol/Tsov = transmittancy.
1936 Plant Physiol. XI. 229 The transmittancies were obtained with a Bausch and Lomb visual spectrophotometer.
1959 H. Barnes Apparatus & Methods Oceanogr. i. 26 A calibration can then be set up relating transmittancy and concentration from which the concentrations of unknowns may be read when their transmittancies have been determined.
This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2021).
<
n.1855
随便看

 

英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/3/21 22:38:48