Physicist Reacts to What If You Detonated a Nuclear Bomb In The Marianas Trench? | Kurzgesagt​

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Original video by ‪@kurzgesagt‬: • What If You Detonated ...
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[@DylanJDance]

Come try my free QAL VPN alpha I built that can protect you from quantum computers: www.qalvpn.com/

[@artao5]

The best thing about the Tsar Bomb is that it terrified everyone and they stopped trying to build more and more powerful nukes.

[@nicholashylton6857]

I think it was more of an issue of practicality. Bombs that large are inefficient in terms of the amount of damage you wish to inflict on your enemy vs. the time & resources you have to invest in to create the device. Most of the energy is wasted. During the Cold War, the Soviets were into building the biggest [anything] that they could to impress the world and intimidate the West. The biggest planes, boats, nuclear reactors... You name it.

[@JohnYoo39]

They also discovered that it's far more destructive and cost-effectice to spend the same amount of resources to build and deploy multiple smaller nukes.

[@innocentbystander3317]

Catapulting thermo-nuclear hand-grenades would be a lot scarier than the Tsar Bomba. Hahaha, pull!

[@dylanshandley1246]

I mean, the whole reason why the soviets built the Tsar Bomba (outside of the publicity win that having the "biggest nuke in the world" was for the soviets) so large, was cause they needed to make up for the inaccuracy of the delivery systems of the era. And, considering that PGM'S came into prominence in the decades immediately following the Tsar Bomba being dropped, there was no need to make a bigger bomb to make sure you hit your target, you could just make a more precise delivery platform for your existing weapons.

[@alibabapirce9782]

tbh im surprised we didnt get another tsar bomb "test" over Ukraine yet.

[@vilyo4489]

Your videos make my day 10 times better. You are the reason i found scienc interesting. And started CS.

[@Style50360]

1:10 "it's something like 700 kg pr square meter" That's a cute number, but no. It's 16.000 PSI, which equals to 11.249.032 kg pr square meter. For comparison that's the weight of 27 747-jumbo jets stacked on top of each other per square meter. An adult average male has a body surface close to 2 meter squared, so that means being submerged into the challenger deep an average adult male would have to experience the equivalence and combined weight of 54 jumbo jets (22.5 million kg) distributed evenly from every angle of his body.

[@DylanJDance]

Jesus. Thanks for the correction! I certainly meant 700 kg / square centimeter, ~10,000 psi. Bottom of Mariana is apparently ~16,000 though, so still wrong. My jumbo guess was way off. I edited it out to stop misinformation spreading but I'll pin your comment for the record

[@Style50360]

@@DylanJDance No problem. I had a feeling you over spoke when you said square meter.

[@iCrimzon]

@@Style50360 *brain pulses with unfathomable power* No problem

[@kbanghart]

@@Style50360 wait .. fully fueled jets, or dry? Any cargo?

[@antonkjellman1960]

@@kbanghart how does it matter? It's an average weight.

[@artao5]

Marianas Trench is no longer the deepest point. Another nearby trench has taken over. James Cameron is actually a VERY enthusiastic oceanographic researcher. And yes. There are microplastics in the Marianas Trench. At the least. :(

[@gaelpersonalaccountlol4495]

What's the new trench called?

[@daisuke910]

Challenger Deep? I think. Still in the area since the only plate that subduct both ways. It is in Mariana trench region

[@comaOOO]

His name is James, James Cameron The bravest pioneer No budget too steep, no sea too deep Who's that? It's him, James Cameron James, James Cameron explorer of the sea With a dying thirst to be the first Could it be? Yeah that's him! James Cameron

[@Mgl1206]

Challenger Deep is a point within the Mariana Trench. It’s not another trench.

[@rixyz7013]

@@daisuke910 challenger deep is the Mariana Trench 🤦‍♂️

[@taiguy53]

I feel so proud whenever the Mariana trench is brought up. I'm a Saipan native, it's one of the islands in the Mariana chain. I moved to Guam and loved there for a couple of years before moving to the US. I miss the islands

[@Lunix_Hardcore]

Yeah, their animations are awesome. Kurzgesagt is a giant team of almost 60 people according to their website. They also operate as a public broadcaster in germany and get funded by tax money there. It's definately not your average "homemade" production.

[@fighteer1]

I'm fairly sure that the thickness of the bomb's shell would matter basically zilch to its detonation, as all of that material would simply become part of the expanding bubble of plasma. I'm having a hard time conceiving of the amount of steel you'd need to withstand a 300 megaton blast from a range of a meter.

[@Salmacream]

Tens of meters thick. So alot, but not like sooooo much its impossible. Edit I was wrong, about 350ish meters of general purpose steel. (Not tooling specifically)

[@Vastin]

It's a lot, but not hundreds of meters I would think. Thick steel is very resilient, and as long as the explosion has elsewhere to expand into (like up into the air) it will mostly do that instead, just blasting away the outer layers of the metal wall that the initial heat flash melted. Point blank with 300mt is a lot though, so I'd want as thick a wall as I could get and then some. :D People tend to assume that bunkers and other hardened structures are automatically destroyed close the the detonation of a nuclear bomb, but in fact heavily hardened structures and vehicles can survive fairly close to such detonations - depending on exactly how big, and how close - though the people inside may soon die to radiation exposure in any case, especially if they don't have closed ventilation systems to keep out all the radioactive smoke and dust, which will be quite deadly for the first few days immediately after a close blast.

[@kbanghart]

@@Vastin right.. I remember reading about how that museum or whatever it was, in Hiroshima, wasn't far off the blast point and it survived.

[@orionx79]

@@Vastin The shock wave would travel thru the steal. So even if you survived the blast you wouldnt survive the shockwave and since steal is relative uncompressible when compare to other materials there would be little energy loss. Water is compressible by the way, The water at the bottom of the trench is slightly heavier then water on the surface. At even higher pressure you can get ice that would be solid at room temperature. I want to state though that it take a lot of pressure to compress water though, So for the sake of most arguments its uncompressible.

[@Vastin]

There would certainly be some shock thru the steel - but I believe that the degree of reflection at its surface would be quite high as it is incompressible AND at substantial thickness also effectively inflexible - so it's ability to actually transmit that much shockwave energy seems limited. Still definitely an issue though.

[@ilan8468]

They put a parachute on the bomb so it would take longer to reach its wanted altitude, giving the pilots more time to flee.

[@TnT_F0X]

What would happen? We'd have really confused crabs and one less nuke.

[@AussieArmWrestler]

Keep the good content coming mate

[@cuntieputa]

I love your vids! I just found you on yt and I love learning all these things, you’re extremely brilliant as well❤️

[@gundam2jimmy]

Tsar Bomba is not just more than all ordnance in WW2, but more than all of it by a factor of 10. Yes, 10x more total.

[@juanbernando]

I like your content. Greetings from New York.🙌

[@kasp7674]

I don't remember it precisely, but you need something like 10^38 joules to blow up earth, while the tsar bomb releases somewhere around 10^20 joules. Basically you would need to detonate 1,000,000,000,000,000,000 Tsar bombs to really do some damage.

[@Badjazy]

Speaking about that James Cameron part exploring the trench, I heard avatar 2 was going to be called "Avatar the way of water".

[@loughkb]

1:11 in. Yeah, there's great pressure down there, but that also makes the water much denser too. A pressure wave can move much faster through denser material with less energy loss per unit of distance. A firecracker in open air, placed next to a chunk of concrete might move the rock, but not damage it. Put that firecracker inside the concrete, which is way denser than air, and it will blow the rock apart. I suspect the energy from the explosion will move quite far through the water. Also there will be the implosion, with water rushing in to the space where the blast flashed water into steam. I'm really interested in seeing the conclusion the authors arrive at. :-) EDIT: Ok, well I didn't get that right. :-)

[@blengi]

only 5% denser. i think convection churning the heat upward is being neglected and would cause quite significant effects at the surface. I just posted a new comment with some links deep nuke tests which i think undermine the narrative that wouldn't be much effect at the surface, which if you sort comments is a very recent one.

[@nicholashylton6857]

_"Marianas Trench...deep mysteries."_ LOL I see what you did there!

[@marverickbin]

What if was a bomb with the same energy as the asteroid that hit the earth 65 million years ago? (100 million megatons) The water pressure could hold it?

[@orionx79]

Isn't that what dug the gulf of mexico out? Could swear i read that.

[@Belnick6666]

adolf loved big things, imagine, or well, DREDD, if adolf managed to built it first, tsar bomba might be tiny to what adolf had planned later lol

[@__TK___]

I think the Wolfenstein Series could have become real. Nuking the US‘ east coast, forcing their surrender and taking over

[@geekswithfeet9137]

The fact is that the pressure would collapse the core and fissile well before it hit full depth. But if it somehow stayed intact; the extra inertial/pressure containment would hold it together, even just a few an would get an order of magnitude more yield. And the high salinity/conductivity of deep sea water would be a fairly decent reflector increasing the radiation temperature of the boosted phase. All in all, I could very easily see 50MT turning into a GT scale device, right in the middle of plate boundaries with a lot of area to side load onto….. that could be enough to trigger the cascade of mega quakes waiting in tension along that ring of fire system

[@Mantaforce2]

They were worried that a 100 megatons nuclear bomb could have serious aftereffects? no shit xD

[@drivinginluton5745]

13:26 RIP Spongebob. 😢

[@TravellerBrianN]

I think you could start the video better with "hi I am Dylan and I have a physics degree and today we are going to debunk this video."

[@sethjg3d]

you definately put the physical in physicists XD

[@egonieser]

Well it's true. These explosions are only perceived as big from the perspective of our tiny sizes. On a planetary scale even the largest nuke would be a little "boop". Like an annoying pinprick. Earth's circumference is 65k km, the few dozen to a hundred kilometre blast radius from the tsar bomba is not even a metric for planetary measurements. A margin of error type of devastation. You also have to remember that earth's crust (being the thinnest part of the earth to begin with) is dozens of kilometres deep as well so it wouldn't really do anything to it as well, nothing that the tectonic plates aren't doing themselves on the daily basis anyway. That's like a flea biting you. Annoying but hardly worth a mention. Thinking that a large nuke could in some way affect the planet or it's crust in any way is like a toddler trying to push on a freight train, well not even that. It would be like an ant trying to push it. Whatever devastation it can cause is to the atmosphere (fallout, toxic fumes and emissions, nuclear winter etc) but on a geological scale a nuke is absolutely insignificant.

[@geddon436]

So, now i'm curious about all the different ways we COULD cause destruction to the earth. As you said.

[@lifewriter7455]

Detonation into a deep trench sounds intriguing. 🖤

[@nukeyourhouse]

9:30 I wonder what we could learn with modern equipment to view an open air blast of a current warhead. Provided we can shield them from the EMP.

[@scisher3294]

I call these Kurzgesagt videos the series of “Stupid ways for birds to die…. For Science” videos. Love ‘em. Thank you for reviewing

[@rickytofen2299]

I like your cut G

[@cavebeastdemon3631]

What I heard was, they didn't go 100 mega ton because the pilots definitely wouldn't have survived.

[@jannegrey593]

With Tsar Bomba they were worried a bit about setting a flame atmosphere. Hence the reduced yield. Though from memory calculations shown that to ignite atmosphere you'd need around 7 GT of TNT. Also it was one of the "cleanest" bobs ever (relatively of course), because so much power came from Fusion, because the Uranium Rod was switched with Lead one. So you didn't have tertiary staging basically. But well over 97% of Power came from Fusion. I remember reading about it. And the place was called (in English) "New Land".

[@orionx79]

They got afraid they light the atmosphere on fire resulting in a run away chain reaction. But so not enough energy.

[@abdullahibrahim9756]

The fade lookin fresh my g

[@aidansavilla24]

wow your growing fast last time i saw you was 3 days ago and you only had 7k subs but now you have 146k subs its amazing keep up the good work.

[@jayjpepedreamer]

🤔 Antimatter bomb you say? Ideas are starting to form in my head.

[@thedevourerofgods1686]

Blackhole bomb time

[@Nsquare_01]

hell nah

[@TobiHReact]

Please make more reactions to kurzgesagt love this!

[@berndmayer3984]

The "window" did not start to crack. A part of the railing had no small holes and cracked.

[@redingzmc4921]

Hey Dylan you should react to another great Kurzgesagt video called Alien Scale, its one of the most watched.

[@ctakitimu]

Unless we go far into the future, the planet will recover from whatever we throw at it given enough time. We'll be gone but the planet won't be

[@georgeryan566]

They didnt put a parachute on the tsar bomba plane they put it on the bomb itself to try to give the pilots as much time to get away as possible... pretty sure.

[@neb-taui-djeser1060]

Humans, smart enough to extinct themself to stupid to avoid it.

[@NoobsailerRBH]

Let's see your reaction to Kurzgesagt - All the Bombs

[@DamithaNadeeshaWanniarachchi]

They were scared that it would vaporize the atmosphere. Even the American's in the Manhatton project had a similiar phobia.

[@blengi]

canninkin 5 MT test was almost 2km under solid rock and lifted the ground 20ft. kzbin.info/www/bejne/fqqTlJ2MpMedhdU Given Rock has density maybe 3 times water, the over lying mass is almost equivalent to marianas. You'd think with tsar bomba being times 10 larger that surface displacement would be somewhat non trivial, especially given convection properties drive alot on energy straight up through the water column like the stalk on a mushroom cloud. Heck in this deep water test (2000ft) after the initial blast a foaming mass of probably hundreds of metres height can be observed for a nuke almost 2000 smaller than tsar - kzbin.info/www/bejne/nIq4f3R8i650gZo

[@TorgieMadison]

On the topic of rubbish in the Marianas Trench... I might be confused about density vs pressure. Liquids are incompressible, so... have the same density from top to bottom, despite the pressure, right? So if I had a rock that was denser than water, and sank at 1m/s, would it continue all the way down from the surface to the bottom of the Marianas Trench, despite the extreme pressure?

[@TheAthens619]

Hey Dylan, I saw your comment on Alex Terrible's cover of Doom, didn't know you were a metal head 🤘🤘🤘

[@Physis_88]

Correction: Kola Superdeep Borehole (The deepest reached 12,262 meters (40,230 ft; 7.619 mi) in 1989 | Wikipedia) is deepest point on Earth

[@spooky8901]

The deepest point on earth is actually the kola super deep borehole

[@lmao4982]

You should do chernobyl, the mini-series

[@grege1984]

and waht will happen if we detonate all the nuclear devices in the trench? all of them at once

[@nukeyourhouse]

What do you think of the theoretical planets with oceans so deep it creates ice 7. Or other planets with supercritical dynamics going on.

[@siaa7078]

did you know "the most radioactive man on earth" died of old age

[@ssagard2000]

Oh I didn't know you are reacting to these! Nice.

[@matthewhowell8429]

180 billion years old?! This thing is like 14 times older than the universe yall.

[@brewmeup5827]

Didn't they just recently discover a huge ancient canyon underneith greenland that is now considered the deepest and largest canyon on earth. I just saw the article briefly but theyhad a picture and it showed tthe topology and it was like the entirety of greenland stretching fromt he north and flowing straight through the center to come out on the other side?.... or is this some crazy ass dream i had?

[@punk_floyd_8123]

Love the video. Just 1 minor gripe. And it is minor 🤣 the trieste had a cracked window on the way down, not at the bottom to cause them to go back up. I actually remember watching something, and I think they said it was either 8 or 9km the outer window cracked, but piccard made the decision to press on. They mainly surfaced because as the trieste hit the bottom, it kicked up a lot of silt, so visibility was really poor, so there was only so much observation they could do. I wouldn't have the balls to keep going if a window cracked on me 🤣 we'd be going back up straight away 😂

[@retorik7246]

how would a human be crushed if humans are mostly made out of water? What you mean is "survive" and not crushed.

[@bobtibet3954]

if you like the mariana trench you should reakt to the deep sea viedeo

[@mastershooter64]

dylan will you make a video about your PhD topic?

[@MS.nkambule]

I liked the comments reading part

[@Sam-de6qx]

Hey Dylan, the original _Pacific Rim_ had a scene of 20,000 tons of dynamite exploding underwater (it's is siad that it was a thermo-nuclear bomb but I can't exactly remember). So could you take a look at that scene and judge it's accuracy? Which segue ways into my suggestion for a video, please take a look at and compare the Movement Physics of the Jaegers in the original and sequel movie. Along with all the other sci-fi imagination they included if possible.

[@paullabossiere5239]

would you really need thicker walls? couldn't you just fill any voids with liquid?

[@ridhimagupta4920]

Amazing video!!

[@ffxiv14xxxnothing57]

Can you react to sword art online next please

[@nurajannattaslima9853]

wait, it was an air detonation.. and its still THAT radioactive

[@elementus2857]

I believe James Cameron went to the trench to get some reference footage for Avatar 2

[@Nabium]

When a reaction video has loads of information and commentary, it's actually a pretty good format. I thought the things Dylan said were more interesting than what was said in the video.

[@luisrosado7050]

We should definitely not go out of our way to blow up our planet

[@Jibi-kun]

React to Kurgzeszagt "The Dark Forest"

[@drnovikov]

R'lyeh will rise, and Cthulhu will wake up. Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn and such.

[@ctakitimu]

Once when I was choosing between two escorts, I was pick hard too

[@zandemerceri2041]

Hello Mr Dylan how you doing

[@oll236]

Videos are so dark now, its like if dylan lost the gf

[@blackhatvisions]

0:09 wow americans. i guess you loved Japan too, which made you detonate nuclear bombs there?

[@MrUberbongo]

Saw the original kurtzgesagt episode. This video is loads of offtopic reactions

[@solar0wind]

The u in kurzgesagt isn't like in "turn", but a bit more like the one in put.

[@BorchikYes]

What did that russian dude say? I speak russian and didnt understand a word

[@Illyriad]

Were a continent, not an island; islands are subcontinental. Also, english US, for shame my dude ;p

[@demonprincess5634]

what if you Detonated it on the moon?

[@Synthatic]

I would love to see you do more of these, if you stayed on topic. It is a bit odd that you drop into tangents almost everytime you stop the video to react.

[@MasterOfTheElements]

Aren't there actually 100 megaton bombs today in Russia?

[@afex1070]

Probably but I'm sure other countries are also hiding stuff.

[@MasterOfTheElements]

@@afex1070 Oh, most definitely. But I hope we never have to find out. 😅

[@SplittingOfPrides]

I don't think so, but bomb can always be made

[@kikuloku5885]

Unfortunately, this video offers no critical analysis, just some speculation on history. Despite, author doesn't speak as someone on a level beyond having heard some doubtful facts; not a physicist level for certain.

[@C0nFus3]

Please watch Life Beyond series by melodysheep, it's cool video about space and searching about alien life.

[@femimark5021]

The second one is great also

[@innocentbystander3317]

MelodySheep is indeed a great channel. Love their time-lapse of the universe videos.

[@flamingkillermc2806]

Bruh you look like damtdm

[@JesseCracksMTG]

Shout out to a fellow Halo player!!!

[@Spalato]

Hate to be that guy, but 700 kilogram per square meter? No offense my dude, that is barely 1 jumbo jet stacked on top of you, let alone 1000.

[@DylanJDance]

Good catch! Meant 700 kg / square centimeter, but it's still wrong; more like 1100 kg / square centimeter. Edited it out to not spread misinformation!

[@arandomguy83yearsago46]

DAY 3: can you watch "why you're not in simulation" by cool worlds

[@powderedphantom5765]

Do you like any non sci-fi fiction?

[@DylanJDance]

Absolutely! Lord of the Rings is my second fav series :)

[@arthurvasco8626]

Man don’t speak in Fahrenheit…

[@charliecarter8452]

i think they swapped from 100MT to 50MT as they were worried it would ignite the atmosphere

[@VuNguyen-wo8bp]

They knew it wouldn't denote the atmosphere by that point, igniting the atmosphere was a slight concern for trinity. They reduced it from 100 to 50 mt for reasons of keeping the bomber crew alive and for radiation fallout concerns.

[@trent800]

They swapped it from 100 MT to 50 MT because the second stage would have created many times more fallout

[@chillcapsaicin6109]

They swapped it from 100mt to 50mt because they knew putting 100 mountains in the mariana trench was not doing anything

[@chillcapsaicin6109]

They swapped it from 100mt to 50mt because they knew putting 100 mountains in the mariana trench was not doing anything

[@blueclevername4900]

dude.... you comment on EVERYTHING except for the specific "facts" they are expressing.

[@DylanJDance]

Haha I can't comment on everything. If I don't comment on a "fact," it's generally because it's correct to the best of my knowledge - I don't know everything though. Sometimes I will because I can add something fun :) If I can only add info I think only super nerds will enjoy, I try to resist

[@mertgoksel744]

Real scientists use spyder and rstudio and matlab. What are u using pycharm, fullstack dev? Pfft. Muhahhaha (This is a joke)

[@darthdiabetes1250]

do you still want us to send you tiktotks on instagram?