Why the speed of light is reduced in a transparent medium
Why the speed of light is reduced in a transparent medium
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为什么光速在透明介质中会降低
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
D. Griffiths
中科院分区：
文献类型：
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作者：
M. James;D. Griffiths
从光学中众所周知，光在透明介质中的速度与真空相比降低了n倍（折射率）。麦克斯韦的电动力学提供了一个简单的解释这种现象，并涉及到n的材料的电极化率。但传统的分析并没有阐明其中的机制。本文对许多诱导分子偶极子的辐射合谋产生一个以约化速度传播的单波的“奇迹”作了一些解释。
It is well known from optics that the speed of light in a transparent medium is reduced by a factor of n (the index of refraction) as compared with vacuum. Maxwell’s electrodynamics provides a simple account of this phenomenon, and relates n to the electric susceptibility of the material. But the conventional analysis does little to illuminate the mechanism involved. This paper offers some elucidation of the ‘‘miracle’’ by which the radiation from many induced molecular dipoles conspires to produce a single wave propagating at the reduced speed.