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  • What would happen to you if a black hole the size of a coin

    你會發生什麼事?如果有一個硬幣大的黑洞

  • suddenly appeared near you?

    突然出現在你旁邊

  • Short answer: you’d die.

    最簡單的答案:你會死掉

  • Long answer: it depends.

    講的詳細一點:這要看情況

  • Is it a black hole with the mass of a coin,

    要看是如硬幣重的黑洞

  • or is it as wide as a coin?

    或是如硬幣尺寸的黑洞

  • Suppose a US nickel with the mass of about 5 grams

    假設有一個5公克的鎳幣

  • magically collapsed into a black hole.

    神奇崩塌成一個黑洞

  • This black hole would have a radius of about 10 to the power of −30 meters.

    這個黑洞的半徑將有10的-30次方公尺

  • By comparison, a hydrogen atom is about 10 to the power of −11 meters.

    比較一下,氫原子半徑約為10的-11次方公尺

  • So the black hole compared to an atom is as small as

    所以黑洞比氫原子的大小

  • an atom compared to the Sun.

    就好比氫原子比太陽的大小

  • Unimaginably small!

    小到無法想像!!!

  • And a small black hole would also have an unimaginably short lifetime

    小黑洞也有無法想像的超短壽命

  • to decay by Hawking radiation.

    它會因霍金輻射而消散

  • It would radiate away what little mass it has in 10 to the power of −23 seconds.

    它會在10的-23次方秒內把質量都幅射出去

  • Its 5 grams of mass will be converted to 450 terajoules of energy,

    5公克的質量將轉換成450兆焦耳的能量

  • which will lead to an explosion roughly 3 times bigger than

    導致爆炸程度大約是三倍的

  • the atomic bombs dropped on Hiroshima and Nagasaki combined.

    廣島和長崎核爆能量加起來

  • In this case, you die.

    在這個案例中,你已經死了

  • You also lose the coin.

    你也失去你的硬幣

  • If the black hole had the diameter of a common coin,

    如果這是個有硬幣直徑的黑洞

  • then it would be considerably more massive.

    它將有更大的質量

  • In fact, a black hole with the diameter of a nickel

    事實上,和硬幣一樣直徑的黑洞

  • would be slightly more massive than the Earth.

    其質量比地球還稍稍重一些

  • It would have a surface gravity a billion billion times greater

    它的表面重力,比我們現在的星球還大上

  • than our planet currently does.

    數百個億億倍

  • Its tidal forces on you would be so strong

    它的引力是如此巨大

  • that they’d rip your individual cells apart.

    導致你的每個細胞被撕裂

  • The black hole would consume you before you even realized what’s happening.

    在你還沒意識到前,黑洞就會把你吞噬

  • Although the laws of gravity are still the same,

    雖然萬有引力定律是相同的

  • the phenomenon of gravity that you’d experience would be very different

    但你所體驗到的重力現象將非常不同

  • around such dense objects.

    當處在這樣高密度的物體旁

  • The range of the gravitational attraction

    萬有引力作用的範圍

  • extends over the entire observable universe,

    擴展到整個已知宇宙

  • with gravity getting weaker the farther away you are from something.

    你離某些東西越遠,重力就越弱

  • On Earth right now, your head and your toes are approximately the same distance

    現在,你的頭和腳離地球中心的距離

  • from the center of our planet.

    是大約差不多的

  • But if you stood on a nickel-sized black hole,

    但如果你站在一個硬幣大小的黑洞上

  • your feet would be hundreds of times closer to the center,

    你的腳和其中心的距離會近幾百倍

  • and the gravitational force would be tens of thousands of times as large

    受到的重力也會比頭還大幾萬倍

  • as the force on your head and rip you into a billion pieces.

    然後把你撕成幾十億個碎片

  • But the black hole wouldn’t stop with just you.

    黑洞不會因為你而停止

  • The black hole is now a dominant gravitational piece

    現在黑洞成為主要的重力因子

  • of the EarthMoonBlack-Hole-of-Death system.

    在地球-月球-死亡黑洞這個系統之間

  • You might think that the black hole would sink towards the center of the planet

    你可能認為黑洞會下沉至星球中心

  • and consume it from the inside out.

    然後將其由內而外的吞噬

  • In fact, the Earth also moves up onto the black hole and begins to bob around,

    事實上,地球也會往黑洞方向移動,並來回擺動著

  • as if it were orbiting the black hole,

    就像地球也在繞著黑洞運行一樣

  • all while having swathes of mass eaten with each pass,

    每個時刻都有一部分的地球被其吞噬

  • which is much more creepy.

    這聽起來有點詭異

  • As the Earth is eaten up from the inside,

    當地球從內部被吞噬

  • it collapses into a scattered disk of hot rock,

    它會崩解分散成為熱岩盤

  • surrounding the black hole in a tight orbit.

    以緊密的軌道環繞著黑洞

  • The black hole slowly doubles its mass by the time it’s done feeding.

    黑洞慢慢吞噬著,最後增加為2倍質量

  • The Moon’s orbit is now highly elliptical.

    月球以楕圓形軌道繞著地球

  • The effects on the Solar system are awesome

    這樣的影響在太陽系之中是令人敬畏的

  • in the Biblical sense of awesome, which means terrifying.

    如《聖經》般令人敬畏的,即是說可怕的

  • Tidal forces from the black hole would probably disrupt the near-Earth asteroids,

    來自黑洞的引力可能瓦解近地小行星

  • maybe even parts of the asteroid belt,

    甚至部分的小行星帶

  • sending rocks careening through the Solar system.

    使岩塊傾向太陽系

  • Bombardment and impacts may become commonplace

    撞擊可能變得習以為常

  • for the next few million years.

    在接下來數百萬年間持續著

  • The planets are slightly perturbed, but stay approximately in the same orbit.

    星球會有些許的擾亂但大致上在相同的軌道上

  • The black hole we used to call Earth will now

    我們以前稱之為地球的黑洞

  • continue on orbiting the Sun in the Earth’s place.

    將持續地繞著太陽運行

  • In this case, you also die.

    在這個案例中,你一樣會死掉

  • This bonus video was made possible by your contributions on Patreon.

    因為有你對Patreon的贊助,才能製作這個額外的影片

  • Thank you so much for your support!

    非常感謝您的支持

  • The topic is based on a question on the AskScience subreddit

    這個主題是基於AskScience上的一個提問

  • and the glorious answer by Matt [Caplin?], who also worked with us on this video.

    和Matt Caplin在上面引人入勝的回答,他也參與了這部影片

  • Check out his blog, Quarks and Coffee, for more awesome stuff like this!

    去看看他的部落格吧,Quarks and Coffee,那裡有更多精彩的東西

  • If you want to discuss the video, we have our own subreddit now.

    如果你想進一步討論此影片,我們現在也有自己的subreddit了

  • To learn more about black holes or equally interesting neutron stars, click here.

    想知道更多關於黑洞,中子星的事,請點這裡...

  • Subtitles by the Amara.org community

What would happen to you if a black hole the size of a coin

你會發生什麼事?如果有一個硬幣大的黑洞

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B1 中級 中文 英國腔 黑洞 硬幣 地球 吞噬 重力 質量

如果你的口袋裡有一個黑洞呢? (What if there was a black hole in your pocket?)

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    mommy 發佈於 2021 年 01 月 14 日
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