Name: 多少隻水母能供給東京的電力、下一整天的香蕉雨會生什麼事？一起來看看這些怪奇的科學問題吧！ (What If It Rains Bananas For A Day?)
Uploaded: 2025-05-07T02:52:51.000Z
Duration: 11 min 11 s

Today, we're answering the stupidest, hmm, okay, wait, the best and most amazing questions from you, our viewers.

今天，我們將回答觀眾朋友們提出的最愚蠢的問題，嗯，好吧，等等，最好的、最令人驚奇的問題。

At Kurzgesagt, we're experts when it comes to tackling stupid questions, and on top of our own, we get hundreds from you on an almost daily basis.

在 Kurzgesagt，我們是解決愚蠢問題的專家，除了我們自己的問題之外，我們幾乎每天都會從您那裡收到數百個問題。

So, let's very seriously and scientifically answer some of them.

是以，讓我們非常認真、科學地回答其中的一些問題。

How many jellyfish do you need to power Tokyo?

Tokyo is a hungry beast, gobbling up around 280 terawatt hours of electricity every year.

東京是一頭飢餓的野獸，每年消耗約 280 兆瓦時的電力。

That's more energy than these 20 countries combined, and more than all of Australia.

這比這 20 個國家的能源總和還要多，比澳洲全國的能源還要多。

Can we power Tokyo with our innovative renewable energy source?

我們能用創新的可再生能源為東京供電嗎？

Some jelly species, like Aquaria victoria or crystal jelly, contain fluorescent proteins and glow in the dark.

有些果凍品種，如維多利亞水族館果凍或水晶果凍，含有熒光蛋白，能在黑暗中發光。

If you put one of them in front of a tiny solar panel, you'd end up with something like a microwatt hour of energy.

如果把其中的一個放在一塊小小的太陽能電池板前，就能獲得大約一微瓦時的能量。

To meet Tokyo's outrageous energy demands, you'd need a quintillion, 300 quadrillion glowing jellies.

為了滿足東京的能源需求，你需要五億到三億個發光果凍。

How about Nemopiluma nomurai, the Nomura jellyfish?

野村水母（Nemopiluma nomurai）怎麼樣？

Really chunky boys, weighing about as much as a piano and growing up to 2 meters wide, they're armed with around a thousand spindly tentacles that grow up to 4 meters long and help them suck up plankton from the water.

它們是真正的大塊頭，重達一架鋼琴，寬達 2 米，身上長著大約一千條細長的觸鬚，這些觸鬚長達 4 米，幫助它們從水中吸食浮游生物。

In recent years, their numbers have been exploding, wreaking havoc on local ecosystems.

近年來，它們的數量激增，給當地的生態系統造成了嚴重破壞。

Using these fridge-sized jellies to power Tokyo will finally give them something more useful to do.

用這些冰箱大小的果凍為東京供電，終於可以讓它們做些更有用的事情了。

They don't glow in the dark, but jellyfish are kind of electric, aren't they?

雖然它們不會在黑暗中發光，但水母也是會發光的，不是嗎？

If you've ever been stung by a jellyfish, you know it feels like a painful electric jolt.

如果你曾被水母蜇過，你就會知道那感覺就像被電擊一樣疼痛。

But the pain actually comes from hundreds of nematocysts inside their tentacles, tiny dark guns filled with venom.

但實際上，疼痛來自於它們觸鬚內的數百個線蟲囊，這些小黑槍充滿了毒液。

那麼，我們如何從水母身上獲取能量呢？

We'll squeeze it out of them, with the power of piezoelectricity.

我們將用壓電的力量把它擠出來。

Piezoelectricity is an electric charge that builds up in certain solid materials like crystals or bone when you stress and squeeze them.

壓電是一種電荷，當你對某些固體材料（如晶體或骨骼）施加壓力和擠壓時，它們就會產生電荷。

For example, a quartz crystal is made up of positive and negatively charged atoms arranged in repeating pyramid shapes.

例如，石英晶體是由帶正電和負電的原子組成的，這些原子呈重複的金字塔形排列。

Their charges usually cancel each other out.

But if you apply enough pressure, atoms shift out of place and the pyramids become kind of wonky, positively charged on one side and negatively charged on the other, like a battery.

但如果施加足夠的壓力，原子就會移位，金字塔就會變得有點古怪，一邊帶正電，另一邊帶負電，就像電池一樣。

Together, they add up to a charge across the whole crystal.

兩者相加，就形成了整個晶體的電荷。

Piezoelectricity powers sonar, times quartz watches, and some nightclubs use it to keep the lights on just from the stamping of dancers' feet.

壓電為聲納提供動力，為石英錶計時，一些夜總會還利用壓電使舞者的跺腳聲保持燈光亮起。

We'll create a ginormous battery from jellyfish by harnessing the hypnotic movements of Nomura's hundreds of long, thin tentacles.

我們將利用野村數百根細長觸手的催眠動作，用水母製造出一個巨大的電池。

First, we squeeze our jellyfish, one tentacle at a time, into a kind of wetsuit made from nylon 1111, a cutting-edge material that's been optimized for power production and has the same piezoelectric properties as quartz.

首先，我們將水母的觸手一根根擠進一種由尼龍 1111 製成的潛水衣中。尼龍 1111 是一種經過優化的尖端材料，用於發電，具有與石英相同的壓電特性。

Next, we watch as each twitch of a tentacle bends the tiny nylon nanofibers of the jellysuit, converting its movements into electricity.

接下來，我們將看到觸手的每一次抽動都會彎曲水母衣的微小尼龍納米纖維，將其運動轉化為電能。

All we need to do now is to plug our jelly into a current collector with a copper cable to be utterly disappointed.

我們現在需要做的，就是用一根銅線將果凍插入一個電流收集器，然後就徹底失望了。

Even with around 1,000 tentacles wrapped in energy-generating nylon, the electricity generated only adds up to around 1 watt, or 10 kilowatt-hours per year.

即使約有 1,000 根觸鬚上纏繞著可產生能量的尼龍，每年產生的電量也只有約 1 瓦，即 10 千瓦時。

Enough energy to run your laptop for 20 days.

足夠你的筆記本電腦使用 20 天。

Not bad, but we want to power Tokyo here.

還不錯，但我們想在這裡給東京供電。

We need more jellies, way more, about 29 billion.

我們需要更多的果凍，多得多，大約 290 億個。

Sounds like a lot, and it is, but right now, there are 27 billion chickens alive on Earth, so it's mostly a matter of motivation on our part.

聽起來好像很多，確實如此，但現在地球上有 270 億隻雞還活著，所以這主要是我們的動力問題。

A single Nomura can produce millions of jelly babies a month, and with enough plankton to eat, they can grow from the size of a grain of rice to the size of a person in less than a year.

一個野村一個月能生產數百萬個果凍寶寶，只要有足夠的浮游生物吃，它們就能在不到一年的時間裡從米粒大小長到人的大小。

If we want to breed a lot of them and fast, all we need to do is basically empty the Pacific of plankton.

如果我們想快速繁殖大量的浮游生物，我們所需要做的基本上就是清空太平洋上的浮游生物。

And of course, we'll need space to store them all.

當然，我們還需要空間來存放它們。

Giving each Nomura a cube of space measuring 5 meters on each side sounds generous, but it barely contains the tentacles.

給每個野村一個邊長 5 米的立方體空間聽起來很慷慨，但它只能勉強容納觸手。

All those jelly cubes add up to a tank that's about 7 times the total volume of Mount Fuji.

所有這些果凍方塊加起來，相當於富士山總體積的 7 倍。

With all those tentacles and cables, our biggest issue will be short circuits.

有了這些觸手和電纜，我們最大的問題就是短路。

We need to insulate all 29 billion cables.

我們需要對全部 290 億條電纜進行絕緣處理。

And don't forget the tentacles themselves.

Now, even if the jellies get tangled up, we can maintain a steady power supply for the good people of Tokyo.

現在，即使果凍被纏住，我們也能為東京的好人們維持穩定的電力供應。

In reality, of course, our jellyfish power station would be pretty difficult to maintain.

當然，在現實中，我們的水母發電站很難維持。

Nomura would probably die constantly and need to be replaced.

野村可能會不斷死去，需要被替換。

And the cost of building this whole mess and killing the ocean to feed them would be like spending $1 million to buy a single dollar bill.

而建造這堆亂七八糟的東西和殺死海洋來養活它們的成本，就好比花 100 萬美元買一張一元紙幣。

We're not saying any of this is a good idea, but now we've done the maths, there's nothing to stop you from giving it a try.

我們並不是說這些都是好主意，但既然我們已經計算過了，就沒有什麼可以阻止你去試一試。

Okay, bring on the next totally dumb, completely reasonable question.

好了，下一個完全愚蠢、完全合理的問題開始了。

What if it rained bananas instead of water for a whole day?

如果下了一整天的香蕉雨而不是水雨呢？

Okay, so first we tried to calculate what would happen if for one day, every single raindroplet was now a banana.

好吧，首先我們試著計算一下，如果有一天，每一顆雨滴都變成了香蕉，會發生什麼。

Turns out, in a storm, several million raindrops can fall on a single square meter, which stacks quickly to the equivalent of a banana asteroid smashing into the planet and killing all life.

原來，在一場暴風雨中，一平方米上會落下幾百萬個雨滴，這些雨滴迅速疊加起來，就相當於一顆香蕉小行星砸向地球，殺死所有生命。

Instead, let's take the average volume of rain that falls on our planet in a single day.

相反，讓我們以地球上一天的平均降雨量為例。

A massive, wobbly orb of water 14 kilometers across.

一個巨大的、搖擺不定的水球，直徑達 14 公里。

Each fruit weighs about 120 grams, which will give us a daily banana fall of 11.1 quadrillion bananas, weighing 1.33 trillion tons in total.

每個水果重約 120 克，這樣每天就有 11.1 萬億根香蕉掉落，總重量達 1.33 萬億噸。

If we match average global rainfall patterns, even the Sahara Desert would receive around 15 trillion bananas.

如果按照全球平均降雨模式，即使是撒哈拉沙漠也能收到約 15 萬億根香蕉。

If a medium-sized banana has about 105 calories, 15 trillion Sahara bananas alone could already feed the world's population for over two months.

如果一根中等大小的香蕉大約有 105 卡路里的熱量，那麼僅 15 萬億根撒哈拉香蕉就可以供世界人口食用兩個多月。

For the world as a whole, the calories of all rain bananas add up to a grand total of 1.2 quintillion calories.

就全世界而言，所有雨中香蕉的熱量加起來共計 1.2 萬億卡路里。

With just one day of banana rain, we could go on feeding everyone on Earth for over a hundred years.

只要有一天的香蕉雨，我們就能為地球上的每個人提供一百多年的食物。

Of course, in reality, the banana rain would be pretty catastrophic.

當然，在現實中，香蕉雨將會是一場災難。

A banana falling from about 3,000 meters, the height of a mid-altitude rain cloud, would reach a velocity of 240 meters per second and strike the ground with the same kinetic energy you'd get from dropping a bowling ball off a 50-meter building.

香蕉從大約 3000 米（中空雨雲的高度）的高度落下，速度將達到每秒 240 米，撞擊地面所產生的動能與從 50 米高的大樓上扔下一個保齡球所產生的動能相同。

And we're dropping over 11 quadrillion of them across the planet.

我們在地球上丟棄了超過 11 萬億個這樣的東西。

One of the rainiest and therefore worst affected cities is London.

倫敦是雨水最多的城市之一，是以也是受影響最嚴重的城市之一。

It would face a storm of 21 billion bananas, or 2.5 million tons.

它將面臨 210 億香蕉或 250 萬噸香蕉的風暴。

The shower of yellow death breaks roofs, shatters windows, and decimates national monuments.

黃色的死亡之雨擊碎了屋頂，震碎了窗戶，摧毀了國家紀念碑。

Human bones are no match for this monsoon, so we'd need to take shelter from a banana blitz inside or underground.

人類的骨骼無法與這種季風匹敵，所以我們需要在室內或地下躲避香蕉的襲擊。

All around the world, cities and infrastructure, rivers and rainforests are severely damaged and clotted with a layer of banana smoothie that's already beginning to rot.

在世界各地，城市和基礎設施、河流和雨林都遭到嚴重破壞，凝結著一層已經開始腐爛的香蕉沙冰。

Trillions of mashed bananas are floating in the ocean, clogging up coastlines.

數以萬億計的香蕉泥漂浮在海洋中，堵塞了海岸線。

Picture the aftermath of all the worst oil spills and superstorms combined, but way worse than kind of everywhere.

想象一下所有最嚴重的漏油事件和超級風暴加在一起的後果，但比任何地方都要嚴重得多。

And our problems are just getting started.

The rotting banana mush contains 160 billion tons of methane, 280 times our current annual emissions as a planet.

腐爛的香蕉泥中含有 1600 億噸甲烷，是我們這個星球目前年排放量的 280 倍。

Methane traps around 28 times more heat than CO2.

甲烷捕獲的熱量大約是二氧化碳的 28 倍。

Adding this much greenhouse gas this quickly will lead to a catastrophic and sudden spike in global temperatures.

這麼快就增加這麼多溫室氣體，將導致全球氣溫災難性地突然飆升。

Most ecosystems won't be able to handle it, and will witness a devastating mass extinction event.

大多數生態系統將無法承受，並將發生毀滅性的大滅絕事件。

In short, banana rain is an apocalypse-level catastrophe.

總之，香蕉雨是一場世界末日級別的災難。

Okay, hopefully your question has been properly answered.

好了，希望你的問題得到了正確的回答。

Please keep sending us your amazing questions, even and especially if they're stupid.

請繼續向我們提出您的精彩問題，即使這些問題很愚蠢。

We're collecting them, and we'll answer more of them in the future.

我們正在收集這些問題，今後會回答更多問題。

Like that time I downloaded some random software from a sketchy website.

就像那次我從一個不正規的網站上隨便下載了一個軟件。

We tried out NordVPN to avoid that sort of catastrophe.

為了避免這種災難，我們試用了 NordVPN。

Go to nordvpn.com slash kurzgesagt to make sure malicious websites are blocked, web trackers stopped, and pesky ads are hidden.

請訪問 nordvpn.com slash kurzgesagt，確保攔截惡意網站、阻止網絡跟蹤器並隱藏討厭的廣告。

NordVPN's Threat Protection scans files during downloads and removes malware and trackers automatically, and they warn you of any apps that seem risky.

NordVPN 的 "威脅保護 "會在下載過程中掃描文件，自動刪除惡意軟件和跟蹤器，並對任何看似有風險的應用程序發出警告。

On top, NordVPN offers many more features.

此外，NordVPN 還提供更多功能。

Summer is travel season, and NordVPN encrypts your connection when you connect to unknown Wi-Fi stations in hotels, airports, or cafes.

夏季是旅遊旺季，當您連接到酒店、機場或咖啡館的未知 Wi-Fi 站時，NordVPN 會對您的連接進行加密。

You can choose from over 7,000 fast servers in 111 countries around the world.

您可以從全球 111 個國家/地區的 7,000 多個快速服務器中進行選擇。

So you can also access your home content from abroad.

是以，您也可以從國外訪問國內內容。

You can also book flights, hotels, or rental cars more cheaply thanks to the price difference in different countries, regardless of whether you're surfing with a computer, tablet, or smartphone.

由於不同國家的價格差異，您還可以更便宜地預訂機票、酒店或租車，無論您是使用電腦、平板電腦還是智能手機上網。

NordVPN is compatible with all major platforms and can be used on 10 devices simultaneously.

NordVPN 兼容所有主流平臺，可同時在 10 臺設備上使用。

字幕列表影片播放

多少隻水母能供給東京的電力、下一整天的香蕉雨會生什麼事？一起來看看這些怪奇的科學問題吧！ (What If It Rains Bananas For A Day?)

matter

tackle

average

squeeze