V2EX rayleigh scattering

Rayleigh Scattering

定义 Definition

瑞利散射:当光穿过由远小于光波波长的微小粒子(如空气分子)组成的介质时发生的散射现象。其强度对波长非常敏感,近似与 \(1/\lambda^4\) 成正比,因此短波长的蓝光比长波长的红光更容易被散射,这也是天空呈蓝色、日出日落偏红的主要原因之一。(该术语也常与更大粒子导致的米氏散射相对。)

发音 Pronunciation (IPA)

/reli sktr/

例句 Examples

Rayleigh scattering makes the sky look blue.
瑞利散射使天空看起来是蓝色的。

Because Rayleigh scattering strongly favors shorter wavelengths, sunlight passing through more atmosphere at sunset loses much of its blue light, leaving the sky and sun appearing redder.
由于瑞利散射对短波长更敏感,日落时阳光穿过更厚的大气层会散失更多蓝光,因此天空和太阳看起来更偏红。

词源 Etymology

“Rayleigh”来自英国物理学家瑞利勋爵(Lord Rayleigh,John William Strutt)的姓氏;他在19世纪对光散射与天空颜色等现象进行了重要研究。“scattering”源自英语动词 scatter(“散开、散射”),指光被粒子改变传播方向的过程。

相关词 Related Words

文学与经典著作 Literary Works

  • Lord Rayleigh, On the Light from the Sky, its Polarization and Colour(瑞利关于天空光的偏振与颜色的经典论文)
  • Richard P. Feynman, The Feynman Lectures on Physics(以直观方式讨论光与散射等现象)
  • Bohren & Huffman, Absorption and Scattering of Light by Small Particles(小粒子光吸收与散射的权威教材,涵盖瑞利散射与其推广)
  • Jackson, Classical Electrodynamics(从电磁理论角度讨论散射的经典参考书,相关推导常涉及瑞利极限)
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