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  • Hey there, welcome to Life Noggin!

    嗨,大家好,歡迎來到 Life Noggin!

  • After hearing how Alan Eustace jumped out of a balloon 42 km up and survived,

    在聽到 Alan Eustace 成功從 42 公里高的氣球上跳下來後,

  • I started to wonder about what would happen if he had been even higher.


  • How would his body have handled the extreme conditions of the atmosphere?


  • What if you fell from space to Earth?


  • Let's go way up to the Karman line, where space technically begins, 100 km above Earth's surface.

    我們一起到卡門線看看,外太空嚴格來說,是從地球表面上 100 公里處開始算起。

  • We're going to jump out of this rocket and find out what happens.


  • As you can see, we are immediately knocked unconscious.


  • Brain cells need a constant flow of oxygen, which there's not very much of up here.


  • So when they don't get that, the brain goes into a state of hypoxia and kinda just shuts down.


  • In serious cases, this can lead to seizures, coma, and even brain death.


  • Also, up here in the thermosphere, we're being exposed to some very intense X-Rays and UV rays from the sun.

    此外,在增溫層中,我們暴露在一些非常強烈的 X 射線和來自太陽的紫外線。

  • If this alone doesn't kill us, we'll likely start vomiting due to radiation poisoning.


  • When we get to the mesosphere, which reaches from 85 km above Earth down to 50 km, things don't get much better.

    當我們到達地球上空 50 至 85 公里的中氣層時,事情並沒有好轉。

  • We're met with extremely cold temperatures here, almost negative 100 degrees celsius, giving us some serious frostbite!

    我們這裡會遇到非常冷的溫度,幾乎是 -100°C,會讓我們嚴重凍傷!

  • But on top of that, the friction of falling this fast from this high up is literally burning through our skin!


  • This is also the layer of the atmosphere where meteors disintegrate.


  • They leave trails of dust and light behind them, which is what makes them look like shooting stars.


  • If you were to fall through the atmosphere, it would kind of be like you're a human version of a shooting star,


  • which doesn't sound fun when you actually think about what's happening.


  • Next, we'll enter the stratosphere, which is between 50km to about 15 km above the Earth's surface.

    接下來,我們將進入平流層,位於地球表面上約 15 至 50 公里間。

  • There's a point in the stratosphere above which, your blood starts to boil, around 23 km up.

    在平流層上方有一個重點,大約在 23 公里處,你的血液會開始沸騰。

  • At this level of atmospheric pressure, liquids boil at much lower temperatures


  • because the change in pressure of the liquid allows molecules to move more freely between liquid and gas states.


  • The lower the pressure, the quicker it boils.


  • So with low pressure levels at this height and above, your blood boils.


  • It could also happen with other bodily fluids like stomach acid and urine too!


  • The troposphere would likely be the least excruciatingly painful of the atmospheric levels.


  • In this layer that stretches about 15 km above the Earth's surface, the atmosphere becomes a lot more rich in oxygen and we can finally regain consciousness.

    在距離地球表面約 15 公里的這一層中,大氣變得富含氧氣,我們終於可以恢復意識。

  • But what next?


  • No one has ever fallen from 100 km up, but people have survived some pretty impressive falls.

    沒有人從 100 公里以上掉下來過,但有人在一些令人印象深刻的墜落中活下來。

  • Like WWII pilot Alan Magee who survived a fall of 6 km after crashing through a glass roof which absorbed some of the impact.

    就像第二次世界大戰的飛行員艾倫.馬吉一樣,在撞到玻璃屋頂後,吸收了一些衝擊力,從 6 公里的墜落中活下來。

  • Or Vesna Vulovic whose plane exploded 10 km up.

    或是維斯娜.烏洛維奇,她的飛機在 10 公里高的地方爆炸。

  • She fell to the ground inside a piece of the plane and survived!


  • And it goes without saying, but obviously do not attempt this yourself.


  • I want you to be safe.


  • So, have you ever been skydiving? Would you want to go skydiving?

    那麼,你有沒有跳過傘? 你想去跳傘嗎?

  • Let me know in the comment section below, or tell us, what should we talk about next?


  • I know a lot of you watch our videos toKeep on Thinking,” and want to build the skill sets for doing so,

    我知道你們很多人都在看我們「Keep on Thinking」的影片,也想要建立這樣做的技能組,

  • and that's why I'm so excited to team up with our sponsor Brilliant dot org.

    這是為什麼我很高興與我們的讚助商 Brilliant dot org 合作。

  • Brilliant offers you engaging problems to get you interested, and they help explain

    Brilliant 提供有引人入勝的問題讓你感興趣,幫助解釋

  • how to break the problem down into relevant concepts, think through each part, and build back up to the conclusion.


  • when you are falling from space to earth, it involves a lot of physics


  • and because physics is so interesting, Brilliant offers both basic and advanced courses in physics!

    因為物理學非常有趣,Brilliant 提供物理學的基礎和高階課程!

  • I tried them, I absorbed the information, they're fantastic.


  • To support Life Noggin and learn more about Brilliant, go to brilliant dot org slash Life Noggin and sign up for free.

    支持 Life Noggin 與了解更多有關 Brilliant 的資訊,請到 brilliant dot org/Life Noggin, 而且免費註冊!

  • There's a link at the top of the description.


  • Also, the first 200 people that go to that link will get 20% off the annual Premium subscription.

    此外,前往連結的前 200 人可以獲得年度高級訂閱 20% 的折扣。

  • If you sign up to Brilliant through our link, make sure to Tweet me everything you learned, and we can chat all about it! @LifeNoggin

    如果你使用我們的連結註冊 Brilliant,一定要發推特告訴我你學到的任何東西,我們可以聊聊所有內容!@LifeNoggin

  • As always, my name is Blocko.

    一如往常,我是 Blocko。

  • This has been Life Noggin.

    這裡是 Life Noggin。

  • Don't forget to keep on thinking.


Hey there, welcome to Life Noggin!

嗨,大家好,歡迎來到 Life Noggin!


影片操作 你可以在這邊進行「影片」的調整,以及「字幕」的顯示

B1 中級 中文 美國腔 大氣層 沸騰 地球 氧氣 外太空 物理學

如果你從太空墜落到地球會怎樣? (What If You Fell From Space to Earth?)

  • 247 16
    Jerry Liu 發佈於 2021 年 01 月 14 日