STEM与日常科技·英语30篇（3）

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瑞利散射与天空颜色

Sunlight contains all visible colors, but nitrogen and oxygen molecules scatter shorter blue wavelengths far more strongly than red ones.
This Rayleigh scattering happens because molecule size is much smaller than light’s wavelength—especially for blue light.
At noon, the sky looks deep blue because sunlight travels a short path through atmosphere, maximizing blue scatter.
Near sunrise or sunset, light passes through thicker air, so most blue gets scattered away before reaching your eyes.
What remains—longer orange and red waves—paints clouds and mountains with warm, dramatic tones.
On Mars, fine rust dust particles are larger, so they scatter red light more: hence its butterscotch-colored sky.
Polarized sunglasses work partly by blocking horizontally scattered blue light, reducing glare from water or roads.
Even though air seems ‘empty’, its invisible molecules constantly reshape how we see light across Earth and beyond.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

What remains—longer orange and red waves—paints clouds and mountains with warm, dramatic tones. 剩余的波长较长的橙光和红光，为云朵与山峦染上温暖而浓烈的色调。
This Rayleigh scattering happens because molecule size is much smaller than light’s wavelength—especially for blue light. 这种瑞利散射发生的原因是分子尺寸远小于光的波长——尤其是蓝光。
Polarized sunglasses work partly by blocking horizontally scattered blue light, reducing glare from water or roads. 偏光太阳镜部分通过阻隔水平方向散射的蓝光来减少水面或路面的眩光。

这篇中文题目最接近哪一句？瑞利散射与天空颜色一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？阳光包含所有可见色，但氮气和氧气分子对波长较短的蓝光散射远强于红光。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） Rayleigh Scattering and the Color of the Sky How to cook noodles A maths worksheet

What remains—longer orange and red waves—paints clouds and mountains with warm, dramatic tones.

What remains—longer orange and red waves—paints clouds and mountains with warm, dramatic tones.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：What remains—longer orange and red waves—paints clouds and mountains with warm, dramatic tones.