< p >彩虹的位置并不是一个物理对象。它是一种光学现象,取决于你的位置相对于太阳和雨水。如果你站在那里你的眼睛可以拦截彩色光,你站在太阳和阳光反射在雨滴在你面前。别人站在不同的位置不一定会看到彩虹,如果他们抬头看着同一个天空的一部分。< / p > < p >与< a href = " http://ww2010.atmos.uiuc.edu/ (Gh) /指导/地铁/ opt / wtr / rnbw / frm.rxml”rel = " nofollow noreferrer " >伊利诺伊大学< / >:< / p > < blockquote > < p >根据笛卡尔的计算使用光学定律,光经历的三个阶段refraction-reflection-refraction模式通过雨滴时产生一个外向射线浓度沿着一条线是42度以上一个观察者的影子。这个浓度的光线就是我们看到彩虹。< / p > < /引用> < p >还是< a href = " https://www.nationalgeographic.org/encyclopedia/rainbow/print/: % 7 e:文本在% 20 = % 2 c % 20没有% 20人% 20看到,他% 20或% 20她% 20的% 20的地平线。”rel = " nofollow noreferrer " >国家地理杂志的这篇文章< / >有一个很好的描述:< / p > < blockquote > < p >地上观众只能看到雨滴在地平线上的反射光。因为每个人的地平线上有点不同,实际上没有人从地上看到一个完整的彩虹。事实上,没有人看到相同的rainbow-each人有不同的对日点,每个人都有一个不同的地平线。人出现低于或接近“以何种; of a rainbow to one viewer will see another rainbow, extending from his or her own horizon. What this means is that a rainbow is not really a meteorological occurrence that can be measured or catalogued, because you would get a different answer depending on your reference point. Lightning, in contrast, is a physical phenomena that has a precise location which can be determined and verified from multiple points of reference.
Rainbows are photographed and archived by enthusiasts, but it's really about artistic appreciation. While I have not looked into rainbow forecast services, a quick search shows some interesting resources, such as How to Predict Rainbows and Plan Photographs which has a link to a photography app that can plan for rainbows and here is a rainbow app you can install on your phone.
How Rainbows Happen also has a nice description (shown below) and some other useful resources. 