Is It Really Impossible To Breathe Through a Tube Underwater?
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- čas přidán 19. 06. 2023
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I see how deep I can breathe with a tube underwater.
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A few comments:
1: Even if you could inhale, with more than a couple feet of tube you are essentially just breathing in your own breath that you just exhaled. So you’d have to exhale outside the tube to survive.
2: Yes, I meant 4.33 not 433 psi 😂But still thousands of pounds of force you are pushing against.
3: The tube wasn't crimped shut as far as I could tell. Every time I jumped in, I could feel the air being sucked (pushed actually) out of my lungs as I went deeper. So the tube was open enough to squish the air out of my lungs. But maybe the kinks increased resistance so that we could have gone a bit deeper with a rigid pipe. But I'm guessing not much more than one or two feet.
Is going 10 feet deep deadly?
That’s what I always thought was the issue. That you couldn’t push the volume of are contained in the entire tube. Never thought about the pressure…now I fell dumb. At least you fixed my ignorance!
Ok
Why wouldn't you breath out through your nose?
I came here to mention the pressure discrepancy. 👍
I tried to breath through a water hose when I was at bottom of the pool when I was younger. Yeah, I was perplexed why it didn't work at the time.
Pressure against your lungs will not allow you to breathe in
If you have any law questions go ahead and ask, I specialize in bird law though
Well if you got enough water into your lungs the pressure would equalize right
@@CharlieKellyEsqOhh ok
@@CharlieKellyEsq is it legal to marry interspecies? I'm a cockatoo and want to marry a chicken, would like to know the ins and outs abt it.
It's also important to note that if you ever plan on breathing air you are compressing it's important to use an oil free compressor
Yep, better just not do it 😅
The oil lubricates you lungs to help the air slide in easier
@@LawrenceTimme 🤣🤣🤣 you're so right!!
Then an oil free compressor Is NOT a good idea 🤪
Just use olive oil. Maybe a little garlic and a sprinkling of parmesan cheese. Delicious.
The replies, omg
My brother is an underwater welder and believe me, this stuff is scary. The fact that your lungs can explode just because you might not exhale during your ascent is insane.
You'd not be able to keep the air in, the failure point is your tongue or throat not your lungs, so you'd just be forced to exhale.
@@bscutajar No, the failure point is the alveoli in your lungs. Very easy to damage, they'll rupture much sooner than your diaphragm gives way. Think about it, if your diaphragm was the weak point, you'd just exhale on the way up and it wouldn't be very dangerous.
Part of scuba diving training is learning to always be exhaling just a little bit whenever you're not taking in air. ALWAYS. Trust me, when I was getting certified, I forgot after taking a break and floated up about 3 feet and my lungs _hurt_ for days after
I heard that deep diver has to hold themselves at certain depth for a set of times before raising out of the water to avoid sudden un-gas of the dissolved oxygen and nitrogen in their blood that will surely be very painful and lethal as well.
@@bscutajar False. Pulmonary barotrauma(over expansion of the lungs) is very real and very dangerous risk in any compressed gas dive.
@@axe4770Not even deep divers. You can build up dangerous gas levels from even like 60 feet of water. It depends on how long you are underwater at different levels of depth. Learning how to safely ascend from diving is one of the most important parts of your training. Also a reason why dive computers are an absolute lifesaver
Thanks for getting right to the point, I really appreciate content like that.
I tried that once at my friend's above-ground pool. I was totally taken aback that I couldn't breathe through a plastic tube only a few feet below the surface. It was then when I realized why it took so long to develop the self contained underwater breathing apparatus, SCUBA gear.
Now I know what SCUBA means, thanks!
I didn't notice since he didn't capitalized it.
@@lucasthechThat should be common knowledge
@@RealMTBAddictDon’t shame them for not knowing, I’m sure there was a time when you didn’t know that.
@@colorado841 My bad, sorry.
Not only is the water pressing on your lungs, it appears that your hose was actually collapsing under the pressure, which would make it impossible to suck air through it regardless.
True
Yes I can't believe they completely overlooked this.
They should have used a vacuum hose
Yess
That's exactly what I saw too!
I kept thinking, how come I'm not seeing any air being exhaled? Are they trying to exhale back into the hose that's got kinks in it?
The rubbery nature and unnecessary length of the hose definitely contributed to the issue
I was a lifeguard in the early 90s. I tried to clean the deep end of the pool using this trick. It was amazing how quickly it became near-impossible to breathe. As soon as I noticed it, I realized what I had overlooked.
Excellent! I’m an engineer and I can’t think of another video or text that beautifully explains this concept…kudos to doing and showing
When I was young at college, I swam in under water show and underwater gardener. We used hoses with 50lbs of pressure and tips that when pressed sideways would release pressure. Because there was no regulator you had to learn how much air to allow in and exhale. One of the hardest thing to learn was to be able to sneeze underwater. If your body needed to sneeze and you didn't, you could not inhale more air. The things I learned how to do underwater, especially without tanks, is incredible.
Whoa. I hadn't ever considered about sneezing underwater. I don't ever recall having the sensation. Interesting.
@@huykedyeah fr I think I'd will through it if not fuck me 😂
For me, I recall a slight/quick (but sharp) inhale at the exact moment RIGHT BEFORE the actual sneeze… Maybe it's not the same for other people… But if it is, then wouldn't you end up choking on the water that your body is trying to inhale in order to sneeze??? 🤔
(Sorry if what I'm saying doesn't make a lot of sense.😅)
@@savage___stomp
It makes perfect sense. You just have to prevent that by controlling it. I do best when trying to limit my sneezes by breathing out my air, then my sneezes are mostly just lung convulsions without moving much air.
The mermaids at wiki wachi here in Florida have to learn to breathe with a underwater hose. They train for months before being allowed to do the show.
And remember, divers usually dive with 3000psi of air in their tanks. The first stage regulator reduces this pressure to the ambient pressure dynamically to adjust for water depth, and the second stage of the regulator, that goes into your mouth, is just strong enough that your lungs creating any amount of vacuum overcomes the diaphragm allowing air to flow into your mouth and then when you exhale it closes the diaphragm. But it takes that to breath under the pressure of water below a few feet.
This answers the question I had. I was confused about how divers can use SCUBA gear if their lungs aren’t able to inhale.
@@KyleT1990 Glad I could shed light on that for you.
The first stage of the regulator regulates to about 150 psi above ambient, the second stage regulates to ambient. I used to service and repair SCUBA equipment in the '90s, not sure of the exact numbers but they're close.
Thanks for this, I was wondering how scuba divers can breathe
@@HighlanderNorth1Thanks, we aren't interested in your scam scheme and we actually want to live when we go under water
Thank you for recording and posting this educational video.
Great video! Straight to the point, clear, and interesting!
Can confirm: During scuba diving, no-breath-holding is one of the most basic safety rules. Putting aside deco diving, recreational divers ascend slowly in order to avoid the air-expansion problem that you mentioned ... and, should the 'oh, shit' case occur where a bouyant ascent is required, we're trained to exhale continuously.
Wait but how is inhaling from the tank different? Is it because it's pressurized?
@@zacharydefeciani7890 Yes, the tank is at higher pressure than the water and is reduced by the regulators in two stages. So, pressure of air inside lungs = pressure of water pushing from outside.
@halfsourlizard9319 I wrote this and then he started talking about the compressor so I had a feeling that was why
Confirm x2. For one of my PADI certs, we practiced one of those ascents where you blow bubbles and swim to the surface. Your intuition looking at the distance is that it's a long way to swim on a single breath of air, but that's the thing... It isn't really a "single" breath. As the air expands, the bubbles just keep coming, and it's easy to go that far with a constant exhale. Very weird experience. It's like having a magician pull an infinite scarf out of your mouth.
@@clairecelestin8437 Yeah, I knew that's what ought to happen in theory, but it was still bonkers to exhale and exhale and exhale and still have air.
This is the purpose of the regulator in modern SCUBA equipment. It reduces the air pressure from the 3,000 PSI in the cylinder to exactly match the water pressure at whatever depth you are at at that point in time. If the air pressure going into your lungs is equal to the water pressure pushing on your lungs, breathing just feels normal. It's really quite amazing technology.
Crazy... You inhale more air per air and don't even realize
@@thecoolereraserii6082 Sometimes it's regular air. Sometimes it's a gas mixture. Depends on how deep you are.
Interesting. Thanks for explaining that. I wish this dummy would have put that info in the slide also
I love watching the dive talk channel and never learnt that!! Does the lower air pressure affect the amount of air you inhale/absorb?
@@JUNIsLuke The volume of your max inhale doesnt change( it's fixed by lungs/ribs size). The deeper you go, the more pressure there is, meaning for the same volume you'll need more and more air, therefore the deeper you dive the faster you will go through a tank. Naturally that does come with side effects( like decompression sickness, gas narcosis, etc), but smart people invented ways to diminish them( as much as possible).
The compressor part is like what you go through with a free-flowing regulator in scuba diving. The air is "free-flowing" through the second stage so you almost "sip" the air out of the regulator with very short breaths. It's an interesting feeling
I haven't been swimming in a long time but man this video brings back all the fears I have associated with swimming, your ear getting blocked, loads of water getting up your nose, trying to see underwater without goggles, accidentally getting water in your mouth. Not even cameras are safe from the horrors of urine infested swimming pools.
An interesting story related to this. There was a prisoner who attempted to escape through the water from whatever prison it was. He made a helmet out of a football and used a long hose to breath that he tied a float to. He filled his pants with rocks so he could walk on the bottom but hadn't considered that the air was breathing at that depth was is own air he just exhaled and he asphyxiated.
Did he die then ?
source: trust me bro
@@best0616 his body was eventually recovered yes. This happened many years ago and I dont even remember how I heard about it but yes he did die. They think by the time he started passing out he couldnt drop his ballast in time and surface.
Guy should have used two hoses.
@@babyboo600 I have none. I think at this point I heard that story 15 years ago on the radio I think. I honestly would love to know if i am remembering that right or not
I learnt a lot watching this video and reading through the comments. Good stuff!
I tried this 50 years ago in a farm pond with a garden hose. The conclusion that me and my friends came to was that our lungs had less capacity than the length of hose so we were breathing our own air ( some have noted this below) . We never thought of the pressure difference since the pond might have been 5 feet at the most.
you would only use the hose for intake and exhale through your nose into the water. but the reason this won't work anyway is because the pressure of the water presses the hose closed. You need something like a hollow pipe that will stay open.
@@headhunter1945 You can find videos of people trying that with a hollow pipe, still doesnt work deeper than 1-2 feet because of the pressure needed to inhale.
@@markopolic9964 What if you brought an upside down bucket with you with a weight attached. You could then use that as an air source because it would be compressed at the same pressure, right?
@@jimaylan6140 the air's pressure doesn't matter, it's your body's pressure. the water is crushing your lungs closed and they're not strong enough to expand. the way scuba suits work is the air tank actually senses how much water pressure there is and forces air into your lungs with that much extra pressure, so it forces your lungs out from the inside. that's why as he mentions divers must exhale before resurfacing because all of that pressure will be in their lungs and without the water continuing to press it in then it'll explode
Another problem you experiences was that the tube got kinked and compressed. So even if you had super strong diaphragms and could fight against the surrounding water pressure, you'd still get no air through your tube because it was essentially held shut and any vacuum pulled on it would just collapse it further.
You should have used a solid pipe to try with.
This is what I was thinking of too - what about a stainless still tube or smth
Yep, in the movies they usually used some sort of Reed/Bamboo.
Rigid wall, Bigger the Bore the better.
Still not going to do much though to help below a few feet.
Your mileage may vary! 😁
Mike in San Diego. 🌞🎸🚀🖖
yep, I'll believe its a pressure issue if they use a pipe or supported tube.
Came here to say this :)
I bet on this theory😂
This is probably the most dangerous thing ive seen you test!
I was terrified the entire time!
Amazing video!
Never been outside or what?
2:56 this makes me want to watch an hour long compilation of pioneers looking like weirdos while testing new tech
Added disclaimer for the air compressor you are breathing un dryed air, pretty sure u can get pneumonia if you do it for extended time. Also risk of inhaling rust and oil
Another disclaimer: the thumbnail is not a reference to George Floyd
@@vincentturnt6635 The fuck kind of comment is this
I double a snorkel length once and was surprised by how difficult it was to breath just an extra 6 inches under water.
dont do that, except if it has a exhale valve. Cause else you inhale the air, that you just exhaled and die.
@@neutronenstern. Exhale valve, that's genius, now I can safely try this at home!
@@neutronenstern. the pipe was fairly narrow. I didn't try it for long.
@@neutronenstern.
It has to be a really wide or long tube to hold that much air, unless you are breathing really shallow breaths.
@@neutronenstern. it should work aswell if you exhale through your nose instead of back into the tube right?
I appreciate the emphasis on safety and talking about the potential risks
So interesting! I didn’t expect this outcome!
I remember as a kid on holiday, swimming in the hotel pool with my snorkel, and I tried to fully submerge my head while the snorkel was still sticking out of the water, using the pool ladder to hold me under. As soon as I did it I realised I couldn’t breath, and now 20 years later, I have my answer.
Thanks for noting that the compressed air in your lungs will expand as you surface. One of the first rules that I learned during YMCA scuba lessons in 1972 when I was 15 was "Don't stop breathing". Though I haven't been an active diver for many years, I'll always remember that rule.
Good advice for anyone, really 👍
@@Parmetheus It's actually... Never HOLD Your Breath!
1st rule: never dive alone
2nd rule: never hold your breath
@@thomasfplm That's what I learned in the YMCA program.
@@majorbuzz, and I learned from PADI.
perfect timing for this video
such a simple experiment but really solidifies these concepts. thanks. I wouldn't have used such a flimsy hose though, I'd try it again with a garden hose or 10 ft of plastic pipe.
1:52 I think there is a slight mistake.
10 feet is about 3m . Pressure rises about one bar every 10m.
So at 3 meters he should feel 0.3bar on his chest.
0.3 bars = 43.5 psi, not 435psi.
4.33 One PSI is 2.31ft of water column.
0.3 bar is 4.35PSI
@@Sixta16 Ur right,im an idiot too,lol.
@@yaykruser don't take it seriously man you just wanted to politely propose a correction.. you weren't in the wrong. Have a great day.
@yaykruser still better than the clown making this video 😂
My brother and I did this with an air compressor in our pool and we were able to stay down, but when we came up we realized that compressor air has a oily taste and smell that is not the best to be breathing. We only did it that time and never again.
You can get a filter for that. They are used for air brush painting. I don't know how good or suitable it would be for breathing, however.
@@matchrocket1702 Yeah do not do that. Airbrush clean and lung clean are different worlds. It isn't even so much the quantity of contaminant as it is the type.
@@Teth47 Good advice.
I highly recommend never doing that again. You could have easily caused major problems and even killed yourself. It isn't hard to give yourself a embolism with what you were doing.
I know it's fun to find ways to stay under water, but it's also very dangerous.
compressors for breathing air need to be oil free or they need a scrubbing system plus a carbon monoxide detector. oiled compressors can actually produce carbon monoxide which will kill you.
W video love how informative it is keep up the good work!!
JESUS AND GOD LOVES EVERYONE SO MUCH TURN TO THEM BEFORE ITS TO LATE
Fascinating! I never considered these matters of water pressure on the lungs!
Interesting how the pressure of the water makes breathing impossible. I can see why this is an issue. Creating scuba diving was a challenge on its own.
I was able to breathe underwater about 3-4 feet down in my grandparents’ pool as a child. I used about a 1/2 inch diameter flexible hose from an old hand pump, but without the pump attached. It was laborious, but I was able to breathe while laying on the bottom, and I could stay down there for essentially as long as I wanted. I’m sure that some degree of rebreathing my own CO2 did occur, but I never felt that I didn’t have enough air. It simply took considerably more effort than it does to breathe on the surface.
Very impressive! I was able to do the same at 8-9ft, but that apparently "doesn't qualify" due to my "highly suspicious green blood and metal skeleton"😒
I did that with a plastic PVC pipe, we had a pool at a holiday home and i laid flat on the bottom and basically stayed under until i got bored of it.
I was kinda surprised that they only used the flimsy tube and not something more solid to compare to, or at least included the vacuum in the tube in the explanation.
He didn't need to show the bottle and the bag, he could've just mentioned how the tube clogged up because of the pressure.
But yeah, he now made it sound as if it's not possible at all to breathe underwater.
@@Games_and_Musicbecause he doesn't know what he's talking about. And people listen to this. Science lab my ass. I'm a certified commercial diver. Check my comment in comment section. I lay out how he's wrong.
You can see multiple times how the tube is collapsed down near his mouth. Of course you can’t breathe in lol.
@@brendanberry7403 😆😄😆😅😂🤣 it amazes me how he didn't catch that. Seems so simple and easy to notice.
I discovered this as a child in the 1980's in my own backyard pool. Cool you're doing this as an adult on youtube like 30+ years later. Hardly groundbreaking though.
As related experience, I did kayaking from my teens in the 70s, still do occasionally. When I was younger, I toyed with the idea of putting a snorkel inside the kayak, so that after capsize, I could breathe air from inside the kayak & just chill, looking at the under water world. Had a bit of an idea about spear fishing this way. Well, I never did the spear fishing thing but I did try the snorkel idea some. I found that after capsize, breathing through the snorkel was initially very difficult. However, after a short time (30sec or so), it got easy & sustainable. I assume there was a pressure equalisation issue going on with water or air leaking through the spray skirt, which was meant to keep the water out of the boat. However, to this day I am not sure just exactly what was happening with the pressure or why. Might be an interesting thing to investigate further.
I don't know why I am randomly holding my breath whenever they go under water😅
Yea me too 😂
Even though you say not to do it, it's really cool that you explain HOW to do it safely, because inevitably, someone is going to see this, and is going to do it anyway.
I'm doing it right now....the main issue so far is texting under water. Its hard.
@@jackiec498 Yeah, I can imagine. My touch sreen never works when I'm underwater. Might try a laptop next time.
@@weppwebb2885 I'm sure you would need to bring ur PC to the bottom of the pool for this...
Well you need to take scuba diving training and then you can use real safe equipment to do diving
@@rey_nemaattori I'm not sure about the logistics of taking electronics underwater so I'm just gonna try this with a toaster instead
A perfect entertaining experimental scientific video for summer time, love it keep it up guys ❤
This is basically the science behind Scuba Diving at Shallow Depths
Very good demonstration of the physics involved.
I think there's a calc error at 1:55 ....433 psi is 30 atmospheres. which is around 900 feet deep. Since mercury has a density of 12x water: 30 inches of Hg ( a standard weather forecast) --> 30 feet of water.
Another conversion they taught us in diving class was 1x atmospheric pressure (14.7 psi) for every 10 meters, in line with what you both mentioned.
Yeah I came here to say the same thing, you'd be hard pushed to survive 433 psi water pressure
@@beardy_welder You'd be hard pressed at 433 psi....
@@gorkyd7912 I didn't even realise I'd said it that way but now you mention it 😂
Also remember that when you are trying to breathe through a tube that goes to the surface, your effective blood pressure in the inner surfaces of your lungs is going to be the sum of your normal blood pressure and the difference between the water pressure and atmospheric pressure. So you could potentially exceed the rating of the blood vessels in your lungs.
😂 man said rating of vessels.. funny but good info
Wow, i literally never new this. I'm always learning something new. Who would have thought this breathing under water threw a tube thing was a myth?
I’m just at 0:48 and I noticed that the tube is collapsing under pressure …. but just assuming it’s very hard to expand the lungs trying to contrast the water pressure even with a “solid” tube… now I finish to watch the video.
edit: just saw also the pinned comment 🤣
the video was super clear explaining!! as usual! every video is just art for me!!! great job!!!
This is useful knowledge for someone who likes to swim
After you explained the air compression thing it finally made sense to me how divers work! Thank you!
Years ago, when I did pool tech work, I wanted to try this. I never got around to doing it, but a more experienced coworker said it was highly unlikely I could suck air down to a deep level just from my own body power.
It's really cool to see the dolphins. Thanks for all the nice videos.
this question is kinda simple but quite interesting
Videos like this one made early youtube. Could have also been from 2009 in some kind of mythbusters episode
Wow I never thought much about breathing underwater before. I definitely wouldn't have known about resurfacing while holding a breath in.
That's only an issue if you have breathed in at depth(and thus: under pressure).
If you hold breath and dive, the air wouldn't rip your lungs apart.
Since compresser diving isn't a regular thing, this generally only happend when SCUBA-diving, and they'll train you ad ifinitum about not holding your breath while ascending.
At first I thought "what if you use a tube with enforced walls that wouldn't collapse" but then you showed that it's impossible to blow air to that depth and I understood that it is a pure pressure problem of your lungs. Learned a bit. Thanks.
The timing of uploading this video is immaculate
Glad to see you correct the PSI. A good comparison to help people understand the pressure is every ~33 feet is equal to 1 atmosphere. So you go from 1 to 2 atmospheres in just 33 feet. And since that is doubling the pressure you reduce the volume of the same amount of air in half. In 10 feet you are still adding about 1/3 of an atmosphere of pressure. I would need to pull out a calculator to calculate the change in volume but it is more then you would think.
4/3 the pressure (1 and 1/3 atmospheres) would mean 3/4 the volume.
Ty so same loss of volume from 0 - 10 feet as 10 - 30. As I recall in from my scuba training in shallow water even a couple of feet can cause your lungs to burst if you take a breath of compressed air hold it then rise in the water column. This is why one of the rules others have mentioned is you are always breathing in or out.
try with a pipe ! the hose seemed to be kinda kinked in many places !
Still wouldn't work with all the pressure on your body.
Only 0:50 in. Growing up on a lake and cobbling together longer snorkels, im going to say the limit is about 3ft under.
Man’s actually chose the worst possible crinkled tubing for this instead of a rigid tube and straightening it out as much as possible.
4:00
1st safety rule of scuba diving: never dive alone.
2nd safety rule of scuba diving: never hold your breath.
And an interesting fact is that holding your breath at low depth is more dangerous than if you are, deeper, because the variation in volume is smaller for the same variation of depth the deeper you are.
At 10m you have twice the atmospheric pressure, if you go up 10m the volume of air doubles.
At 40m you are at 5 time the atmospheric pressure, if you go up 10m it will go to 4 times, so the change in volume is 20%.
(to be clear, it is in case you fill your lungs at the bottom, if you fill it at the surface, the volume will reduce and go back to the original volume)
I dive alone quite a lot. Needs additional training and equipment.
I prefer it to going with random buddies - seen too much BS. The risk of them being a liability rather than a help is there.
@@svr5423, ideally, you should have someone who you know and have enough training.
I do recreational diving, not professional, but even among professionals I still hear the first rule.
The second one I heard professional underwater photographers say they break to get some pictures.
@@thomasfplm Professional divers tend to go in teams, same with technical diving. But they are trained for this and the requirements are much higher than for recreational diving.
Under PADI, you can for example do the Self Reliant Diver course.
But yeah, standard is with a buddy and there should be a reason why someone would deviate.
@@svr5423, that's true.
Also, in this case, the main point was the second rule about not holding your breath, that is more relevant to the subject of the video.
It's quite possible to get an embolism in only 3ft of water after breathing compressed air.
still, better include the warning before people go test this for themselves in deeper waters without proper knowledge ;p
@@yannicfreson2974 the person above you is suggest there should be MORE WARNINGS on this video...because its more dangerous than shown.
@@diox8tony i misread that as "impossible", my bad xd
I remember long ago there was a product that would reach the bottom of a pool (10 feet). It used leg power to draw air down and had an exhaust valve so you wouldn't rebreathe exhaled air.
The last thing about not surfacing with the compressed air was really something new to me!
For some reason I'm holding my breath while they were underwater
Что если к трубке небольшой насос подключен, плавающий на поверхности
*понятно
To get SCUBA certified you have to do an ascent from 30 feet (I think?) without your tank. Just take a breath, drop the tank, and go up. It's a bizarre feeling blowing out, and out, and out, and out for the entire ascent. You never run out of air.
Colorless green ideas sleep furiously while dancing on the edge of a quantum singularity, whispering melodies to enchanted photons that ponder the philosophical quandaries of cosmic tapioca.
I think the problem isnt with the water pressure acting on your lungs, but on the plastic tube which causes it to buckle and close off,
i would redo the experiment with a stronger, non flexible tube.
You're on the right track. Certified commercial diver here. He's wrong. I laid out why he was wrong in the main comment section.
Based on doing this as a teenager, breathing at 2 1/2 feet down (mouth to surface, lying face up) through a rigid tube is brutal. You'll only be able to take a few dozen shallow breaths before your diaphragm tires out. You need to keep your lungs near the point of maximum inhalation strength, which is somewhere around the mid range, so you're straining hard to keep from exhaling too much then really hard to inhale a bit. I think his "3 to 4 feet before we couldn't take a breath at all" estimate is high.
@@jmodified that's because you're trying to intake and exhaust through a single tube with no one way valves. Maybe I should make a CZcams video showing why he's wrong.
@@charlestannehill7537 Sure, with a check valve you can inhale at somewhat lower pressure because you can relax between inhalations. And, you could attain much lower pressures by repeatedly using mouth suction, though I'm not sure if you could get air in fast enough that way or keep it up for very long. Mouth suction is much stronger than lung suction, maxing out at about -7 psi, so the limit would be 15 feet or so.
But this video was about breathing through a tube (no valves), so how does that make him wrong?
@@jmodified he was referring to as why a snorkel with a longer tube wouldn't work. And he's wrong, plain and simple. Who says a snorkel can't have a one way intake valve? And a one way vent valve? Unified into a single mouth piece? While being ridgid with a float ball attached to have vertical buoyancy?
Anyways, this was very poor half assed attempt at busting this “myth". Which he failed and got wrong. He didn't understand the principal of lungs only being able to pull and push so far. Nothing to do with pressure. If air is only going in one direction, there's no carbon dioxide to rebreathe in. And your lungs have to do no work pushing it out. So it's not as stressful as you might think. At 33 feet, you have two atmospheres pressure. And every 33 feet after that. Even at that depth (33 feet) with the proper setup to what I'm talking about, it would feel like being able to take half breaths. Basically your lungs strength to intake air. And not everyone is the same. You learn that quickly in dive school. He could've asked ANY submariner, commercial diver (like me) or deep sea rescue team. But he didn't. He took that jank ass tubing without understanding the core principles. Now that I know he's wrong on this, I wonder how many other things he's wrong on.
I will not build it, nor do I care to build it. I can slap on a Kirby morgan 27 and weight belt and walk on the bottom. And I live in Oahu. So, yeah....
I know its true because I tried the same thing, however it looks like your tube has a kink in it that kind of spoils the proof.
it's not just your chest being compressed. the pressure at the depth is greater than at surface, so you are trying to move air from an area of low pressure to an area of high pressure within the tube itself. That's why the tube you can see is collapsing under the pressure when you try to breath in, you managed to inhale the little bit that is in the bottom length of the tube but no air from surface would be brought in to replace that. If you take the air filled tube and seal the top end, then bring the whole thing horizontally to your depth and unseal the end, now the pressure on the whole length of the tube is equal. you can now breath in that air in the tube at that depth. same if you get a large bowl upside down and bring it down to the depth and only stick your head in there, you can breath in the air trapped in that bowl even though your chest remains in water with same pressure.
Awesome experiment as always, but I think there is another variable here; I think the air hose itself is quite soft that can be easily crushed and closed by the surrounding pressure stopping air from entering and coming out
I think if you use a harder hose you can go deeper and breathe easy may be to a meter or 2 or even 3 meters
I don't think pressure on lungs are that big in 2 or 3 meters depth in a pool
Definitely pressure will increase and will prevent the lungs to expand, but not on those shallow depths
There're already videos of people trying that with a pipe online, they couldn't go deeper than 1 or 2 feet.. At 1 meter, the added pressure is about +0.1 bar[ 1bar being the pressure of atmosphere at 0m]. According to ncbi.nlm.nih maximum negative pressure humans are able to make is about -0.1 bar, meaning you'd have to try your hardest just to be the same as your surroundings on 1m, and you'd need at least a bit more to start inhaling.
When surfacing after a dive you'll usually make a "safety stop" to let the pressure equalize as you ascend. Cool video I didn't even think about how deep you could snorkel.
Thats mostly to reduce nitrogen in the blood, not related to the volume of air in the lungs.
Two problems related to breathing in increased pressure, but different ones.
*THIS MAN MADE MY LUNGS TENSED BY JUST WATCHING HIS VIDEO HUFF*
no way, an actual science video where i knew the answer before it ended. thank you PADI
433 psi? I think you mean 4.33 PSI
Does tube size matter?
I don’t really think so because you’ll still be “pushing” against the hundred/thousand pounds of water again
@@officiallychelz6508well no, sucking through a small tube would be much harder than sucking through a large tube, it’d be like breathing through a straw. I’m curies if they keep their head in a whole tube would they be able to breath
@@pennywisenibbles4949 I’m not quite sure about the tube thing, because it’d have to be airtight to make sure there’s no water that’ll come through the open spaces around the neck/head when the tube is out in them. And I imagine it’d be hard to take it off (the tube).
@@officiallychelz6508 well yea but the point being I don’t think it’s because of the weight on the lungs I’m pretty sure it’s because he’s trying to suck air through a massive straw
Fun fact: The pressure in PSI is the weight of the column of water from the surface to your depth. About 33 feet is 396 inches, and that's where the water pressure is 14.7 psi, or 1 atmosphere.
About 396 cubic inches of water weighs 14.7 lbs.
I tried this as a teenager. It’s amazing how shallow it is before you can’t inhale atmospheric pressure.
the tube is flattening as wellat ~ 3-4 feet
Course it shows me this the day people get imploded on a sub
I one time needed to find a leak in a pool liner , so i hooked up a regulator to a compressor , and used a aquarium hose ( 50') connecting a snorkel to the regulator at 2 psi to stay under water while looking .
Great timing
anyone acquainted with the principles of hydrostatics will be unsurprised. 🤣👍
Your tube appears to be effected by the pressure of the water as well, would a rigid tube help you get a little lower?
this is insightful
In our country small scale miners use compressor with tube even up to 50 to 60 ft digging for gold on flooded mines or caves.
They actually dig like for 3-8hrs.
0:14 I will attempt
I've already done this when I was a kid. Good times. 😌
My dad's a paramedic and had a patient that flipped a lawn mower into a pond. The lawn mower pinned him under the water. Luckily, he found a piece of garden hose in the muck of the pond that he was able to breath through until he was successfully rescued. I thought his luck was insane already to find that hose. This video makes it seem even wilder that he was able to still breathe through that hose
Breathe out the nose not the mouth
I feel that it's important to exclude the hypothesis that the tube itself collapsed, and that was blocking the flow of air. We can see that the tube has in fact partially collapsed. You also could make the tube have a much smaller internal diameter, whilst having a thick wall. This would both mean it was more resistant to collapse, and that there is less additional air volume to move at each breath.
Try this with a rigid pipe
It's not the pipe. It's his lungs
There was news today about a study showing that training by inhaling against suction has long-term health benefits - primarily reduced blood pressure. This was for high intensity and short duration, so apparently already known for low intensity and longer duration.
What gets me is free diving. Holding one's breath at -100' or more is just wild to me
How much deeper could you go with pure oxygen instead of 80% nitrogen?
like 0 feet
the problem is that one's diaphragm cannot overcome the pressure at-depth; gas mix has no effect.
You could go 80% deeper ofc😂
You would damage your lungs if you breathe pure oxygen.
12 feet. Any deeper and it becomes toxic. (Assuming 14.7psi atmosphere pressure at the surface of the water).
I was able to pull air at 3 feet, but just barely. Any deeper and the water pressure just pushed too hard.
Over the years learning science videos, it's very interesting that if you go down in water, you have weight pushed on your body for your lungs making it harder to breathe, in this case through a tube, AND also if you go high enough like hiking a mountain, similar effect to normal breathing.
So the only logical point of view is to sit at home with 100% normal breaths 😂😂
Compressed air can also be used for high altitude flights too.
a very timely video for the recent news
I forgot to heed the warning not to try this, and now I am at the bottom of the pool with no air. Luckily, I have my waterproof laptop here, with underwater wifi, so I can warn others not to try the same thing.
It looks like the water pressure was compressing the tube itself, could you perhaps have had a deeper limit if the tube was rigid? Cool video.
Tube rigidity doesn't matter. At 10 ft depth you're essentially trying to breathe with 300 Kg weight on your chest.
@@saitama2379 Why doesn't it apply to divers with a tank?
@@Kolbein837 They use a regulator which adjusts the pressure to that of the surrounding water.