How the Body Reacts to Pressure | BBC Earth Science
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Greg Foot is under pressure as he and an inflatable friend attempt to dig to Australia.
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No query about life or the universe is too random or silly for science adventurer Greg Foot. Using brilliantly simple lo-fi demonstrations, hi-tech kit and extreme stunts Greg turns non-scientists into eager enthusiasts and reveals just how mysterious and incredible our world really is.
Welcome to BBC Earth Lab! Here we answer all your curious questions about science in the world around you. If there’s a question you have that we haven’t yet answered let us know in the comments on any of our videos and it could be answered by one of our Earth Lab experts.
Пікірлер: 1 500
Who else is here because of the the Titan Submersible?
@wendellgreenidge3362
11 ай бұрын
That seems like a stupid question
@2400jets
11 ай бұрын
@@wendellgreenidge3362Fr lol we’re all here bc of the Titan
@harryballsacky
11 ай бұрын
NOPE, I LOVE BLOW UP DOLLS
@louieisthename6696
11 ай бұрын
no, we are here for john…
@harryballsacky
11 ай бұрын
@@user-rv4md3vw9b went from mountain dew..to orange crush....
Anyone else here to gain a better understanding of what may have happened to the missing submersible that went to the Titanic site?
@yakitajohnson7804
11 ай бұрын
Yeah a painful way to go 😢
@TT-fr7gz
11 ай бұрын
@@yakitajohnson7804terribly painful. RIP. 😟
@xx_z.bruh_xx6916
11 ай бұрын
Yeah can't imagine the terror they felt... especially if you know whats happening if your ignorant at least you are just confused but knowing before hand as its about to happen is the stuff of nightmares
@goldnnchild4520
11 ай бұрын
@@xx_z.bruh_xx6916that depth once they were exposed to that amount of pressure they would have been reduced to atoms before they could even blink. They would literally be here one second and gone before the next. Not nearly enough time for their brains to register any pain
@Lexie2107
11 ай бұрын
@@goldnnchild4520i m here due to my lack of understanding exactly. I know the pressure down deep it s very high ,but i try to understand what exactly happens to a human body. So ...lets see if I get it properly. Once they ve been exposed to the environment, they simply have been vanished ,like....their bodies have been blown away like literally vaporized??
That doll must have been an interesting thing to write off as a 'company' purchase.
@damian9303
6 жыл бұрын
Don't worry, it came from this guy's closet of secret items to keep away from the kids.
@tmi6044
Жыл бұрын
😂
Titan was full of air. When the implosion occurred in a split second's time, the hull crushed like a can, the air inside was compressed to 5,800 psi in a split second which causes it to get super super hot. The bodies experiencing that sort of pressure burst open and they more or less vaporized and boiled in a split second. They never knew what was happening.
@Olvrin
11 ай бұрын
Yeah I get that, but... they had to feel some pressure and heat before it finally snapped like a can, or not?
@AlGibani123
11 ай бұрын
@@Olvrin no
@omstout
11 ай бұрын
Given the way carbon fiber declaration occurs i suspect: they were simultaneously; burned, shredded, and frozen. The burn, near incinerated, as a function of Boyles Law increased pressure: increased temperature. The shredding would have been both internal as any gasses in their bodies were compressed causing cavitation injuries to tissues. The freezing as those internal gasses were forced into solution and of course the -1 Celsius water.
@hardville
11 ай бұрын
At what point?is the question,,when they knew they had to surface because something went wrong or whether they imploded instantly the only way to find out is when or at what water level did it destruct.
@hardville
11 ай бұрын
@@omstout why use carbon fiber above the ground if it swelters? Because it makes up for buoyancy wrong! Not in hall frame material!🤬 I hate stupid nincompoops
He started making more sense as he talks to an inanimate object expecting a response.
Is that doll from your personal collection 😂
@st_us
8 жыл бұрын
Is that you John?
@Litany_of_Fury
8 жыл бұрын
+stilkus We are all John.
@caitthenerd7470
8 жыл бұрын
+Technitium Be gone, tumblr fiend!
@tedanimations8177
6 жыл бұрын
I was literally just about to comment that
@seemlyme
5 жыл бұрын
Daniel Rosie It is adult ...
That first shot of him walking into a small room with a blow-up doll, holding it by the neck and setting it down on the chair - just PERFECT.
@jerwindejesus7647
11 ай бұрын
And you he says: "deeper and deeper down in your hole"
Ailartsusa is my favourite country.
@polpottopg
8 жыл бұрын
He had to spell it backwards
@alfredogomez1968
6 жыл бұрын
Bungebab Squarepaps ???
@ZeranZeran
3 жыл бұрын
@@polpottopg oh shit he did pretty good actually
@adamwigley9738
3 жыл бұрын
@@ZeranZeran Yeah I didn't hear the backwards part til I read the other guy's comment lol
The titan submersible was over 3,000 meters down when it imploded today. I would imagine the crew were instantly vaporized. Rip to the 19 year old kid that didn’t want to go, but was pressured into it by his wealthy father.
@TaterTotsNFanta
11 ай бұрын
Just insult someone's balls and they'll do anything lol
@Rob-gf3pb
11 ай бұрын
How do you know the boy was pressured
@ivandjones
11 ай бұрын
@@Rob-gf3pb 3000 meters does that to you
@rootbeermcgee
11 ай бұрын
@@Rob-gf3pb it was said he was hesitant to but went because it was Father's Day
@xZazax
11 ай бұрын
@@rootbeermcgeeomg you’re right it was Father’s Day. So he probably felt extra pressured all while being terrified. My heart is aching for the 19 year old 💔 R.I.H to everyone who lost their life.
here to heal my Titan Titanic Trauma
@tigerclaw88
11 ай бұрын
Same lol
The Submarine called Titan: "Bro, it's a cannon event".
Who else came here after learning about the implosion of the Titanic Sub which went missing.
My morbid curiosity from the Titan tragedy brought me here.
@dudksjj7483
11 ай бұрын
same bro
I'm here because of the recent titanic sub incident. I believe if curiosity was exaggerated, it will kill you. There's a limit on what humanity can do. Ocean deep/space exploration are almost the same. It's out of bounds. Been living my life with science and faith. I believe humanity can move forward with responsible innovation.
@Aa-fg6jf
11 ай бұрын
same
@rodrigoacosta9708
11 ай бұрын
Same here
@jacobhendrickson8935
11 ай бұрын
Same
@RCsFinest
11 ай бұрын
For right now
@baumi1986cb
11 ай бұрын
Same
RIP to the life’s declared lost in the Titan Sub today June 22, 2023. May their souls rest and parish
I'm so glad the cameraman can keep himself sane all through that duration and film all this to us 😅😅👍
Bet this has had a bump in views recently .
The Titan tragedy has sent me into rabbit hole of these videos.
The highest pressure ever tested on a human was 71bar (1030 psi or 700 meters underwater) on Theo Mavrostomos in a pressure chamber. He was breathing only 0.4% oxygen, the remaining being helium and hydrogen. 0.4% of oxygen might seem way too low but what really matters is oxygen partial pressure (Pressure times percentage of O2). Our lungs are designed to work with 0.21 bar of oxygen partial pressure. Too much of it causes oxygen poisoning that can be fatal.
@teresashinkansen9402
11 ай бұрын
Seems someone read Wikipedia, or parroted what someone else parroted. Still interesting for someone who does not know,
@redprince3158
11 ай бұрын
spin the knob round see what happens
@1003willy
11 ай бұрын
@@teresashinkansen9402you will learn this in scuba diving class 😆 everyone who wants to scuba dive has to know this
@vairoxx4031
11 ай бұрын
helium is also used as a breathing gas for deep sea exploration but hydrogen... holy moly haha
@supermariosupermayhem
11 ай бұрын
@@vairoxx4031 Hydrogen is also used, as long as there is no enough oxygen to react with. The aim is to provide different gases (instead of two) to avoid HPNS (when the guy become dizzy, but in worse) caused when there is too much of one gas
The air isn't gone from John, it's still there, it's just compressed... Very good explanation
Wow my voice really did go super high! I found this experiment VERY interesting. I won't be trying to dig to Australia anytime soon that's for sure! (& yes there's also the problem of the extreme heat as you dig down too, but even if you could somehow line the tunnel with something theoretically heat proof, this intense pressure would scupper your plans!)
@lockhrt999
8 жыл бұрын
+Greg Foot What was the highest atmospheric pressure?
@Jaqen-HGhar
8 жыл бұрын
+EdgeOfSanity I don't know if it's the same effect as a brain injury but with a brain injury you can tell the word is misspelled but you just can't retrieve the information.
@CerbrusNL
8 жыл бұрын
+Greg Foot "Write australia backwards": I'd just have written it right to left ;-) Although I'm not sure one could come up with that under those conditions.
@Jaqen-HGhar
8 жыл бұрын
***** No problem. I have TBI so it happens a lot and another thing that has happened is the same kind of math problem in the video don't know what I'd do without spell check and a calculator. I used to be a web developer. I also leave out random words without realizing it. It's crazy how easy it is to mess the brain and we take it for granted that we are who we are not because our brains say so but because of some other part of us.
@dougherzz7024
8 жыл бұрын
You sounded like James Blunt
Who's here because of Oceangate? lol
Yes I'm also for the same reason here
Indonesian submarine naggala 402 was found sank 800meters deep into ocean off Bali today.The sub was split in half and all 53 occupants were announced dead. May they all rest in peace. Love from fellow neighbor, Malaysia to all the families and Indonesia
@mikaaimar9253
3 жыл бұрын
Badan mereka hancur ke?
@aliabu863
3 жыл бұрын
@@mikaaimar9253 kemungkinan besar iya
@fajr1695
3 жыл бұрын
Di umbar teros
@l.ch.6447
3 жыл бұрын
Not in half, worse.. split into 3 parts.
@raymendez3403
3 жыл бұрын
Came here to learn more about ocean depth pressure because of this incident. May they rest in peace. If the submarines deep down couldn't handle the pressure, they surely couldn't before touching the bottom, and way before the water came inside... Truly horrific events
For anyone curious as to how you can calculate water pressure yourself....the formula is; Pressure = hpg where; h = height/depth of water column, p = density of water(approx 1000kg/m3), g = gravitational acceleration ( approx 9.81N/m2). The value you get will be in Pascals, Pa. (1 Pa = 0.000415 Psi)
@danieldavis8607
11 ай бұрын
Thank you for explaining this.
@jasonr375
11 ай бұрын
So someone living outside the state would have to drive to Pennsylvania to get the results?
@bodhisattva2348
11 ай бұрын
Instead of giving us information that is going to fry our brains, why don't you explain to me, in dummy form, what hell is going on in this video. 🤔
@fabriceras9562
11 ай бұрын
@@bodhisattva2348 basically for every 300 ft deeper or so you go into the ocean ,you will experience the weight of an elephant stepping on you from all directions (assume the weight of the elephant is on avg 5000kg or about 11000lbs)
@bodhisattva2348
11 ай бұрын
@@fabriceras9562 ok, I understand that 🙂
So this probably how they looked like when the Titan submarine imploded
rip to those who died in the Submersible today.
@revenant097
11 ай бұрын
They most likely died when communication was first lost, days ago.
It’s not embarrassing. You’re just under a lot of pressure. Bazingga
Anyone here after the Titan submarine???
In this year of 2023, the Titanic exploration submersible and all 5 of its passengers are confirmed dead due to catastrophic implosion. May the 5 lives be remembered and they're discoveries live on. Rest in peace.
@hazelrobertson9415
11 ай бұрын
I'm afraid many will just remember them for their idiocy and flagrant disregard to health and safety, physics, common sense etc. The only one who will be thought of with any sympathy will be the 19 year old, Suleman, who was talked into going down to the ocean floor in nothing more than a glorified tin bath by his own father. 4 millionaires and not an ounce of native intelligence between them.
Yup I’m here for the same reason everyone else is
Oh man, the idea of this happening to me is terrifying. There isn't much I'm afraid of, but when hearing Greg's compressed voice made me feel trapped.
@rachamreddycharanreddy7671
3 жыл бұрын
Your voice actually become like Donald duck
@beandopepp1793
11 ай бұрын
I came here after the near definite implosion of the Titan Submersible at approx 3300m depth on the way to visit the Titanic in June 2023. I was curious to see what increasing pressure could look like. This video 100% didn't satisfy the full extent of that, but it was interesting. The terror of the decreased oxygen
@haydn5789
11 ай бұрын
@@beandopepp1793Just did the exact same 👍🏻
@robertgarcia185
11 ай бұрын
Your not the only you that did
@hightolerance8728
11 ай бұрын
@@robertgarcia185man cam Here after hearing about that titanic vessel imploding. What happen to that blow up doll is what happened to those guys HOLLLY
It’s confirmed that the ocean gate people submarine imploded on Sunday, absolute insane way to die
Who's here after watching about the rescue of Titan Submersible?
I know there’ll be a lot of us here to understand what happened on the Titan submersible, which is sad. RIP to those souls.
😢 Who is here for the missing sub on Sunday
Just checking here due to the Ocean Gate Titan missing incident.
We get it people. Everyone is coming here because of the submersible.
RIP TO OCEANGATE.
@DanYule55
11 ай бұрын
Why?
here because interested about the Titanic sub thing. No likey!
I'm here because of the titan submersible.
Did oceangate bring you here?
@munchymonk9021
11 ай бұрын
Lol no, I got here safe and not in a billion pieces.
@nancyfancy1956
11 ай бұрын
@@munchymonk9021I shouldn't be laughing at this.
Oceangate anyone?
@carlizancho2
11 ай бұрын
This is what happened to their bodies
I'm here because of the missing Oceangate Titan submarine trying to get a better understanding of what may went down there.
my teacher should make us watch this for the physics class on pressure, it made me understand pressure due to fluid in a snap.
Who else is here because of the titanic submersible incident?
I guess since the Titan tragedy, we all will be stuck on these type of videos from now on.
I feel sad for Titan passengers. RIP
on the Titan: Water @ 5,000 psi, compressing the five men and air to the sub in
@mvzz
11 ай бұрын
What a way to go..
RIP to the Titan submersible 2023
@xkero
11 ай бұрын
true
This is the absolute essence of working under pressure. Cheers!
Ocean gate is why I’m here
Pressured Greg just sounds like Pewdiepie...
his voice! holy cow!
Soo we all here because of those rich folks huh?
Who’s here for the Titan submersible :o
1st question 7 x 6 = the answer to life the universe and everything
@R0BL0W
8 жыл бұрын
whatdoyougetifyoutimessixbyseven
@brucecoulda1596
7 жыл бұрын
Nice alien
@Snow_B_Wan
7 жыл бұрын
i was a little slow on this
Who else is here because of Titan. OceanGate incident at Titanic...R.I.P #titan
_says is starting to make sense again, proceeds to talk with rubber doll_
Who’s here because of what’s going on now with that sub with a controller?
@GeloSantos
11 ай бұрын
Me
Anybody watching after titan submarine lost in Ocean?
who's here because of Titan?
POV: you’re here to feel how the people who are stuck in the submarine would be surviving
@cortster12
7 ай бұрын
Actually, no, since it would be sustained pressure inside until the sudden implosion.
Is anyone else here because of the titanic disaster???
@SoudagerAamer
11 ай бұрын
God knows I'm only here for the 19yr old kid who "did not" want to go.
Who is here to see how did the men on ocean gate Titan submarine felt
It's crazy that youtube's algorithms throwing you informative videos according to current situation.
Well i know why im here guys.
The Titan’s passengers had it worse but quick, in milliseconds
@xkero
11 ай бұрын
atleast it was really quick.. they probably felt no pain or very little pain at the very end
so thats what scientists use sex dolls for lol
uhh yeah those bodies definitely did not have a slow death.
Here after the missing sub
KZread sure knows what to recommend
the pressure of being 14 kilometers underground, the latest party craze to affect our youth.
@Andizu1
4 жыл бұрын
Rather late to reply...but while this video makes it look like a party craze, this pressure chamber has much more important functions. It is used for divers suffering from decompression sickness, but also, way more importantly, for post-op cancer patients to speed up recovery because of the increased ability to take in oxygen.
How many of you are here after the titan submersible explosion??? 😢
Who came here after learning about the implosion of Oceangate Titan?
“I feel like I’m trashed and I can’t think straight” Sign me up.😊
I'm watching this because of the ocean gate titan
I think were all her to see what happened with the sub
@wukfifty
11 ай бұрын
Definitely
@mizbre989
11 ай бұрын
Indeed
@xkero
11 ай бұрын
yeah lol, i didnt fully understand so i wanted to see how the pressure stuff works.
Here to understand Titan Gate
i came here after the submarine tragedy incident broke out
Anyone here because off the titan submarine
@nadeem3794
11 ай бұрын
🙋♂
I would love to visit Ailartsusa
@KaoruKat
8 жыл бұрын
+911gpd you mean asustralia, cuz he wrote it backwards
@brianisme6498
4 жыл бұрын
KaoruKat *Australia
im here because of the titan sub, just curious how the pressure deep and deep down can affect the body.
Who's here from the titanic submarine crash
@BOT_Christian
11 ай бұрын
Me too. I investigated the effect of pressure inside a Military Submarine, then the Ocean Gate Company made a small Submersible.
@RocketPal
7 ай бұрын
💀 1. *Titan 2. Not a crash This is what you post online after getting information from cheap news articles
now i have to learn as much as i can for some reason
Who is here after hearing about the Titan?
Who’s here after the titan and titanic 😢
I think people should have seen this before they booked that trip
Who else is here because of Titan?
@nymphs.w0mbb
11 ай бұрын
Meee
Rip to everyone involved in the titan accident that just happened. So sad
With the higher voice he sounds exactly like "pewdiepie" tbh :'D
@durvalfernandes7947
7 жыл бұрын
Jason Neu exactly hahaha
So if the recent titanic submarine imploded, the occupants would have at least been high on nitrogen before passing...
@wtfaj7904
11 ай бұрын
Yes probably
@andrewd5135
11 ай бұрын
Thats a relief I'd hate to be stuck at the bottom of the ocean sober.
@Cleisthenes607
11 ай бұрын
If it imploded they'd be dead instantly. The pressure down there is 1,100 times that at sea level.
@LibertyUSA1776
11 ай бұрын
@@Cleisthenes607how do we know that. No one’s ever done it before.
@Cleisthenes607
11 ай бұрын
@@LibertyUSA1776 We've been down far deeper than the Titanic wreck, down to the bottom of the mariana trench. We've seen what happens with ROVs that get down there and fail and implode. This is a known risk, everything has to go perfectly or you die.
Who is is here because of the titan submersible?
Here because of the Titanic sub implosion.
Why is youtube recommending me this video after the titan submersible went missing
Rip x 5
"happily i started making more sense" Proceed to talk to the human baloon 🤣
Yea I'm a bad person who came here to see how those people died...
Who is here to make sure they didn’t suffer from the sub imploding 😭
I am here trying to understand about pressure pressing down on you. RIP to all those in Titan.