网站首页  英汉词典

请输入您要查询的英文单词:

 

单词 Refraction index
释义

Refraction index

中文百科

折射率 Refractive index

(重定向自Refraction index)

某种介质的折射率n 等于光在真空中的速度c 跟光在介质中的相速度v 之比:

n=\frac{c}{v}

比如水的折射率是1.33,表示光在真空中的传播速度是在水中传播速度的1.33倍。

历史上,折射率最早出现在折射定律中, n1sinθ1= n2sinθ2, 其中,θ1θ2分别是光在介质界面上的入射角和折射角,两种介质的折射率分别是n1n2

英语百科

Refractive index 折射率

(重定向自Refraction index)
A ray of light being refracted in a plastic block.
Refraction of a light ray.
Thomas Young coined the term index of refraction.
Diamonds have a very high refractive index of 2.42.

In optics, the refractive index or index of refraction n of a material is a dimensionless number that describes how light propagates through that medium. It is defined as

where c is the speed of light in vacuum and v is the phase velocity of light in the medium. For example, the refractive index of water is 1.333, meaning that light travels 1.333 times faster in a vacuum than it does in water.

随便看

 

英汉网英语在线翻译词典收录了3779314条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2024 encnc.com All Rights Reserved
更新时间:2025/6/18 6:19:47