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单词 refraction
释义 re·frac·tion
\rə̇ˈfrakshən, rēˈf-\ noun
(-s)
Etymology: Late Latin refraction-, refractio, from Latin refractus (past participle of refringere) + -ion-, -io -ion
1. : the action of refracting or the state of being refracted: as
 a. : the deflection from a straight path undergone by a light ray or a wave of energy in passing obliquely from one medium (as air) into another (as water, glass) in which its velocity is different
 b. obsolete : reflection, rebound
 c. obsolete : a breaking up
 d. : the change in the apparent position of a celestial body that is due to the bending of the light rays emanating from it as they pass through the earth's atmosphere; also : the correction to be applied to the apparent position of a body because of this bending
2. obsolete : reduction of a bill : rebate
3.
 a. : the refractive power of the eye
 b. : the act or technique of determining ocular refraction and identifying abnormalities as a basis for the prescription of corrective lenses
4. : the action of distorting an image by viewing through a medium
 < looking at the world … observing it without the refraction of moral judgment — Janet Flanner >
[refraction 1: a light ray, b reflected ray, c refracted ray]
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更新时间:2024/11/13 10:05:09