
Chinese: 
這是所有問題之母！
好吧，也許除了「生命的意義是什麼？」這個
我們已經有科學回答的問題
或者「愛是什麼？」
我們也已經在這個問題上有一些想法了
但是在說英文的世界裡最多在谷歌上被搜索的問題
是很多小孩喜歡問的，
大人卻狼狽地避免回答的問題
因為他們也不知道
為什麼天空是藍色的？
只要給我幾分鐘我就能讓你明白原因
這是世界上被問最多遍的問題！
[Intro]
天空是藍色的 因為3個原因：
來自太陽的光，大氣中的微粒，
和你是人類的事實。
我等一下再解釋最後一部分
讓我們從陽光如何和天空中的微粒相互作用開始說起
我不是指塵埃或水滴或其他大的粒子 
他們有時候會被錯誤的用在解釋天空的藍上
而是指在大氣裡的非常小的微粒
讓天空看起來是藍色的
我在說的是空氣本身的分子
基本上是氧分子和氮分子
O2和N2

English: 
It’s the mother of all questions!
Well, except maybe What’s the Meaning of
Life? -- which we actually have our own scientific
answers to …
Or What Is Love?
-- We have some thoughts on that, too.
But one of the most googled questions in the
English-speaking world is the one that kids
are famous for asking -- and grown-ups are
notorious for avoiding, because they just
don’t know.
Why is the sky blue?
Just give me a couple minutes and I'll let
you know why.
This is the World’s Most Asked Questions!
[Intro]
The sky is blue because of three things: light
from the sun, particles in our atmosphere,
and the fact that you’re a human.
I’ll get to that last part in just a minute.
But let’s start with how sunlight interacts
with particles in the sky.
I’m not talking about dust or water droplets
or other big particles, which are sometimes
mistakenly used to explain the sky’s blueness.
Instead, it’s the very small particles in
our atmosphere that make the sky look blue.
I’m talking about molecules of the air itself,
mostly molecular oxygen and nitrogen -- O2
and N2.

English: 
These molecules are super-abundant in our
atmosphere and so small that they’re even
smaller than wavelengths of visible light!
And that’s the key.
Visible light consists of a range -- or spectrum
-- of different wavelengths.
Light with the longest wavelengths are at
the red end of the spectrum, and light with
the shortest wavelengths are at the blue and
violet end.
Since the blue wavelengths of light are shorter,
they’re more likely to strike those tiny
molecules of oxygen and nitrogen more often,
and when they do, they get scattered in all
directions.
This effect is known as Rayleigh scattering,
because it was first described by John William
Strutt, aka the Third Baron Rayleigh, who
in 1871 published his mathematical proof that
blue wavelengths of light in the atmosphere
are scattered 16 times more than red wavelengths.
But violet light has the shortest wavelength
of all visible light, and it’s scattered
even more strongly by tiny particles -- so
why isn’t the sky purple?
Well, this is where being human comes into
play.
Our human eyes perceive the middle of the
spectrum most sharply which is why blue is
way easier to see than violet.
So even though violet light is being scattered
around like crazy, we just don’t detect
it as well as we detect the blue.
And that’s why the violet band of the rainbow
is often the hardest for us to make out.

Chinese: 
這些分子在我們的大氣裡非常多
並且它們非常小
甚至比可見光的波長還要小！
而這就是關鍵所在
可見光包含一定系列 -或光譜範圍的波長
最長波長的光在光譜的紅色末端
最短波長的光在光譜的藍紫色末端
因為藍色光的波長非常小
它們更容易碰撞到空氣裡的氧分子和氮分子
當它們碰撞，就會向各個方向散射
當它們碰撞，就會向各個方向散射
這個效果被稱為 瑞利散射
因為它最初是被一位叫做John William Strutt提出的
他也是第三位瑞利男爵
他在1871年發表了他的數學證明
大氣裡藍色光的波長比紅色光的波長更容易散射16倍
但是紫色光有可見光中最短的波長
它甚至更容易被微小的粒子散射
那麼為什麼天空不是紫色的呢
這裡就是「作為人類」作為天空是藍色的原因的部分
我們的人眼最容易接收光譜的中間部分
這就是為什麼藍光比紫光更容易被看見
所以即使紫光很瘋狂的被散射
我們就是偵測不到 我們看見的是藍色
這也是為什麼彩虹裡紫色最難被看見

English: 
So SciShow viewers are in luck, because when
we surveyed you, the most popular favorite
color from the rainbow was blue.
33.55% of survey takers reported blue as their
favorite color, while yellow was the least
favorite at only 2.8%.
Poor yellow.
But, there are other animals that can see
all the way into the ultraviolet end of the
spectrum, like honeybees and some birds.
So maybe they like yellow.
And maybe the sky looks completely different
to them.
Of all the fascinating questions in the world,
what question do you want answered most?
Let us know on Facebook or Twitter or in the
comments down below, and we will try to answer
those questions in a new video at the end
of the month.
And don’t forget to use hashtag #WMAQ and
stay tuned for more answers to the World's
Most Asked Questions.

Chinese: 
所以SciShow的觀看者很幸運
因為當我們向你們做問卷調查時
彩虹裡最受歡迎的顏色是藍色
33.55%的問卷參與者寫了藍色是他們最喜歡的顏色
而黃色是最少最喜歡的顏色，只有2.8%
可憐的黃色
但是也有一些動物可以看見一直到光譜中紫外線末端
如蜜蜂和一些鳥
所以他們可能會喜歡黃色
也許天空在他們眼裡也是完全不同的
在世界上所有引人入勝的問題中
你最想知道什麼？
在Facebook或Twitter或在下面的評論裡告訴我們吧
我們會在月底做一個新的影片嘗試回答那些問題
也不要忘記使用#WMAQ的標籤喔
請繼續關注我們，以獲得世界上最常被問的問題的答案
