Name: 為什麼夕陽時天空會變這麼美？一起了解背後的科學！ (Beautiful Science - Why does the sky change color at sunset?)
Uploaded: 2025-06-18T18:09:00.000Z
Duration: 2 min 12 s

第二類條件句型

If you were to look up at the sky on a clear day,

如果你在晴朗的白天抬頭看天空，

you will notice the sun is yellowish and the sky [is] blue.

你會注意到太陽呈現微黃色，而天空是藍色的。

the color of the sun and the sky can change dramatically

太陽與天空的顏色會劇烈變化，

變成紅色、橙色和黃色等色調。

but actually consists of the seven colored waves -

但實際上是由七種顏色的光波組成——

red, orange, yellow, green, blue, indigo and violet.

紅、橙、黃、綠、藍、靛、紫。

If we were to look at the sun from space, it would always appear white.

如果我們從太空中看太陽，它看起來總是白色的。

But on Earth, the atmosphere scatters some of the light waves coming from it.

但在地球上，大氣層會讓部分光波發生散射。

and affects what color we perceive the sky and sun as.

它會影響我們所看到的天空和太陽顏色。

The waves at the red end of the spectrum are longer

This means blue waves are more likely to hit particles in the atmosphere and scatter.

這意味著藍光更容易撞上大氣中的微粒並發生散射。

Hence why, during the day, we see the sky as blue.

因此，在白天，我們看到的天空是藍色的。

as the combination of the color wavelengths that make it through easier,

是因為較容易穿透大氣的紅光與綠光混合，

like red and green, that combine to make yellow light.

At high noon, the sun may also appear white,

在正午時分，太陽也可能看起來是白色的，

as the white light coming directly from the sun

因為此時太陽光直接穿過大氣層的距離最短，

has the least distance to travel through the atmosphere

我們在另一支影片中詳細解釋了

in another video you can find in the description below and at the end of this video.

為什麼天空是藍色的，你可以在本影片說明欄或結尾找到連結。

the light has a longer distance to travel through the atmosphere.

陽光必須穿越更長的大氣距離。

that the light does not end up reaching us.

以至於幾乎無法抵達我們眼中。

The light in the yellow, orange and red wavelengths

而黃光、橙光與紅光的波長較長，

have more chances to scatter on the slightly longer journey

能在較長的路徑中散射後仍傳到我們眼前。

while still making it through to our eyes.

因此，我們看到天空變得溫暖而絢麗。

The lower the sunset, the more dominant longer wavelengths will become.

太陽越接近地平線，長波長的顏色就越明顯。

This is why the colors of sunsets get deeper as the sun sets more on the horizon,

這就是為什麼太陽越落下，天空的顏色越深，

turning from yellow into orange and finally mainly just red hues.

從黃色變為橙色，最後主要只剩紅色的色調。

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感謝收看，別忘了訂閱以獲得更多內容！