Self Inflating Balloons?!

[@w0ttheh3ll]

Actually, some diving beetles use air bubbles to breathe under water. The bubble sticks to their body and they can breathe out of and into it. As they lower the oxygen content inside the bubble, oxygen dissolved in the water starts diffusing into the bubble, thus multiplying the possible duration of a dive.

[@mephistosprincipium]

I saw that on tv recently lol

[@aurochf1]

The same happens, in reverse, with mudskipers and other wet-skinned animals that come out of the water.

[@hermanni1989]

@H3000 High water pressure could work in favor here.

[@THEpicND]

Now that is a cool adaptation of physics. Bugs always have really clever ways of finding a niche

[@djscottdog1]

@H3000 no cos the bubble tension only holds at small scale

[@andreagallo7550]

Gas permeation is a nasty buisness. I spent almost a month trying to solve Oxygen contamination in a pure Nitrogen stream flowing in a gas reactor. Turned out it was permation through the Teflon tubing carrying the Nitrogen, 1 mm wall was causing a 200-300 ppm of O2 permeation per meter of tube. Metal tubing solved the issue, but I was very surprised as well.

[@aetius31]

Could you tell me the kinetic of the permeation? was it 300ppm per hour per day or more (and per meter of course) ?

[@Phoenix88.]

@@aetius31 and the diameter of the tube?

[@andreagallo7550]

@@aetius31 it was 2015, if I recall correctly it was 200 ppm of contamination at steady state in a constant nitrogen stream of 1 L/minutes. For quantification I used a modified Winkler method, preparing the reagents using the first reagent as an oxygen scrubber over different time intervals and it was very fast (for sure it reached steady state in 30min, maybe less) . I did not evaluate the kinetics because the reactor required 45 minutes of conditioning in Nitrogen flow to flush the air (it was not connected to a vacuum)

[@andreagallo7550]

@@Phoenix88. it was a 5mm internal diameter Teflon tube, wall thickness 1mm

[@why_though]

When it comes to gas diffusion always remember that any polymer will act closer to a sieve than an actual blockage. Gas dissolves right into it like it does in liquids.

[@EduChielle]

KZbinrs: jump cut Cody: time travel

[@Uubier]

Laughs in photoShOp 🤣 Cody out here swingin' fists, maybe slaps I don't wanna assume.

[@Nighthawkinlight]

Whaaat. What a cool thing to discover at random. Almost as surprising as back when you did vials of supercritical gasses, how the liquid needed a certain amount of headspace or it would crack the vial. I still don't understand the goings on of that one.

[@Nighthawkinlight]

I'd also be interested to learn the details of what causes an age deflated balloon to contract upon being touched as you see at 12:34. One of those things everyone's probably noticed but never thought about why it happens. Gas diffused in the rubber that suddenly escapes when disturbed or upon contact with skin oils?

[@Rotem_S]

@@Nighthawkinlight It might be something similar to how straightened hair curls after getting wet: maybe some bonds in the rubber partially decomposed and they absorb some of the atoms from skin oils to regain elasticity

[@masonp1314]

Didn't you cover something similar to this in your video on tennis balls, with heavy gases in them? Such as how they were self inflating?

[@fredlllll]

@@Nighthawkinlight it's heat. Cold rubber doesn't like to contract or stretch as easily as warm rubber

[@WarblesOnALot]

@@Nighthawkinlight G'day, Ummm..., first-cut Analysis... As the Balloon slowly deflates, it assumes the Structural Compromise resulting when the Internal Overpressure dwindles to first equalling, & then dropping below..., the surrounding Atmospheric Pressure.... The Walls of the Balloon transition from forming a Pressure-Vessel under Tension..., to what Aeronautical Designers call, "A Stressed-Skin Fully-Monocoque Structure..., under Compression". The base of the Balloon on the Ground deforms to Flatness as it conforms to the Floor, but a Balloon suspended on a String might well be able to maintain it's sphericity until the Surface is deformed by a poking Fingertip, and once the "Eggshell" goes out of shape - then the Atmospheric Overpressure is suddenly able to win...(?) {!}. Just(ifiably ?) speculating..., somewhere betwixt an Hypothetication and a Theorisation..., but it might be not-wrong ? Such is Life, Have a good one... Stay safe. ;-p Ciao !

[@grace-ok5dp]

That relatable moment when you don't have any weights so you have to use your can of radioactive matirals

[@SteepClimb]

When you need something heavy, reach for your heavy metals.

[@thermionicemission6355]

For me it's massive transformers and chokes lol.

[@PWK95]

Funny, how Cody always "discovers" these scientific concepts, pretty much the same way some bored nobles did in the 18th century

[@Uubier]

Science, science never changes.

[@adamwade855]

They were not Bored in the 18th century....

[@dylanzrim1011]

Tesla said his chair was the most useful tool in his shop

[@dylanzrim1011]

He’d just sit and think or observe.

[@mykeprior3436]

minus the "on par with grade 8 science" value.

[@Knifewolf]

Good stuff, I'm amazed this experiment was a year long.

[@guardianofblocks4488]

I didn’t expect that. but I think of all the other experiments that must be run also such long.

[@DanielDavies-StellularNebulla]

I mean, the majority of the video was probably done in a month, maybe two. Then he might have forgotten about it etc, and then came back to it recently to finish it off. That's my take at least.

[@Uubier]

Hell yeah, like I might have expected half year...dunno? Awesome video to Cody because, I got to know SF6 through electrical engineering, sulfur hexa fluoride is a really good electrical insulator. We used it contained at high pressure in the mobile high voltage disconnects. Weell mobile meaning fork it onto a flat bed buuut...ya know.

[@retkvi]

Cody: So it has been, gosh over a year since I first put these ballons here. I: Wot? Thats real devotion to science right there :)

[@RenatoRo]

Like in Plants in tank 2. That was "it's been 2 years" and I was like :0... Since then I patron this man.

[@nitehawk86]

Read about the "pitch drop" experiments. Now THAT is some dedication. :)

[@theCodyReeder]

This isn’t even in my top 10 longest running projects.

[@emrebaskocak]

@@theCodyReeder Would love to see a list!

[@batt3ryac1d]

@@theCodyReeder showing us them would be cool even if they aren't done.

[@maddyschad6649]

I never thought that putting a gas in a balloon would eventually result in the balloon being popped or left with just Air inside. It's good to know that balloons are not a good way to store gas for a while.

[@guiorgy]

I'll refer to a reply by @Marvin Kemper on another comment. Apparently not even high pressure steel tanks can hold helium or hydrogen gas forever. Because their molecules are so small, it will leak eventually. My point is, that it depends on the gas you are storing.

[@Rotem_S]

I mean, in the video we saw that these work fine as long as you put inside them the same gas that is outside

[@guiorgy]

@@Rotem_S *and the pressure is also controlled. Otherwise the balloon still deflates, albeit a lot slower.

[@why_though]

Well that goes for rubber party balloons. But if you used a polymer with low permeation or a metalized foil you could store any gas just fine.

[@joohop]

A Car Wheel Innertube Would Be Better

[@whatdamath]

when the SF6 baloon burst, was the sound more deep like a slow mo scream in an action movie?

[@Imbalto]

Using the radioactive bucket as a paper weight.... nice

[@mrnice4434]

FBI agent: Here we go again

[@puppetsock]

Only Cody would start a vid with "I was playing with some sulphur-hexa-fluoride."

[@guiorgy]

@@puppetsock only Cody would say "I was using a balloon and made a discovery"

[@davidblarstron767]

well its ezentialy a paperweight. that bucket is too heavy to be convignat to store low radioactivity material, the kind a tin box would be enought. For more dangerouz stuff that thing is way too fin.

[@-danR]

@@mrnice4434 He's trolling them again. He knows they keep an eye on his channel.

[@My_initials_are_O.G.cuz_I_am]

8:27 >> You could say that some of the atoms... Argon.

[@louisiv5484]

You gave me cancer.

[@My_initials_are_O.G.cuz_I_am]

@@krisematics6501 I a-door your kindness but I'll pass.

[@kneau]

Olaf Gołąb your noble attitude is rad.

[@slolilols]

@@My_initials_are_O.G.cuz_I_am bro you're lit XD

[@boboften9952]

Arrr , You Be Walking The Planck .

[@hacksmith]

Huh. Interesting!

[@WatCharles]

Sí

[@briangeer1024]

You have good taste

[@MobscastBlackOut]

Sí

[@tylerchiu7065]

Hello there

[@indexisonline]

indeed mr hacksmith! very interesting.

[@uliuchu4318]

"That's cool! I didn't know that. Now I do and so do you" -That sentence sums up the appeal of this channel quite well

[@cptrikester2671]

Great to see the "old style Cody" experiments. 👍

[@AtticusGrim]

I love it when Cody does science at pure random. It it always a joy to hear him break down the scientific method.

[@Ezequiel-lh4ub]

I disagree ,he pretty much follows it ,i was thinking about how he is a really scientist because the way he founds an answer to a unknown phenomena.

[@Zayllyaz]

The amount of projects you must have going at once is amazing. A YEAR later, that's some dedication, really interesting experiment and results.

[@BlaqZ]

and he said its not even on the top ten longest experiment he had. lmao

[@WestAussieTrainz]

“Just playing with sulphur hexafluoride” Best quote from Cody ever

[@georgramm5424]

There must be another explaination for it on the energetic level. A bigger volume under overpressur stores more energy than bevore. So in a way the high SF6 concentration has some hidden energy in it that is transformed.

[@jackw3068]

Yeah I think from the 'perspective' of the nitrogen and oxygen molecules the pressure is lower in the balloon than outside as the partial pressure of the SF6 is entirely supporting the walls of the balloon. So there's a virtual vacuum of empty space for light molecules to bounce around in. I would guess it's like any energy well. similar to planets with magnetic fields being able to both capture and lose light nuclei despite the energy barrier. So we Terraform Mars with heavy gasses?

[@why_though]

The energy you are looking for is hiding in it's low entropy. The gradient is what drives the permeation and the gradient is basically potential energy on a molecular scale, aka entropy.

[@the1exnay]

Pure separated gasses are lower entropy than mixed gasses. I think there are a few different ways to turn that into useable energy. Though i don't know of any practical uses for it

[@Danny1986il]

So the interesting question is, why is the entropic gradient here is bigger than the pressure gradient?

[@KeiranR]

I have noticed that and I did kind of think that was what was going on but it's really good to have someone like yourself confirm my suspicions.. love your work mate ..i just wish it was possible for you to do more content.. this is a thing that I love about your channel is you don't need a high production quality in your content for it to sell..your process is your content.. it's more like you show on a mate how to do something it's beautiful.. I love your content more than some of the flashy showy crap ...keep doing your thing mate cause it works🖖

[@DancingRain]

Great video :) I'm always amused with the physical models you come up with. There's a cleverness to them - in how you manage to portray the process accurately, but in a way I'd never have expected. As for the argon balloon; the lonely argon atoms are smaller than the oxygen and nitrogen molecules. SF₆ on the other hand, being made of seven atoms, is quite a bit larger.

[@niklaskoskinen123]

When you think about it, osmosis is just selective diffusion: Some molecules pass through and equalize in partial pressure, while others don't.

[@cheaterman49]

Yeah, pretty nice! I also like to think of the bigger molecules just "blocking the holes" on one side of the porous material, making it semi-permeable. A bit like a rubber valve in piping :-)

[@nopo_b3645]

@@cheaterman49 I think you can also think of it as that SF6 slams into the balloon plastic and is repelled. Thus that increases the pressure without leaving the balloon. Other gas molecules get in and raise the pressure until there is enough of them such that leaving and entering molecules numbers are at a balance.

[@andrewstambaugh240]

@@cheaterman49 like a ball check valve

[@cheaterman49]

@@andrewstambaugh240 yes exactly!

[@secularstormchaser0074]

I had that exact same clock, I had to bend the hands to get them to move.

[@djicroatia8936]

Yo let's get this to Cody so he doesn't throw away his clock. This clock is in almost every video and it would be a shame to replace it :)

[@buckstarchaser2376]

But if you bend the hands to make them move, you must already know what time it is, and don't need this clock.

[@waggsm3358]

I'm an automotive mechanic and I've experienced this with converting older vehicles from R-12 to R-134a refrigerant as the R-134a is a smaller molecule the hoses need to be changed to a different type to keep the gas from escaping through the rubber. This is still a very eye opening science experiment.

[@fungusenthusiast8249]

i was taught that helium escaped because the atoms were so small. I was taught wrong

[@theCodyReeder]

That’s part of it, just not the whole story.

[@Nosirrbro]

I think in this case the walls of a rubber balloon are so permeable that only the very biggest molecules are at all hindered from passing through, and rather its the amount of osmotic pressure (Which would be only slightly more with helium than oxygen) that is limiting the rate of deflation. Now, I bet if you did this test with a mylar balloon, helium would deflate much more rapidly than other gasses.

[@koukouzee2923]

Same xD

[@PWK95]

Na, thats actually not that wrong. Since the atoms are so small it happens much much faster with helium than with any other gas. Helium and Hydrogen are so light in fact, that not even metal can stop them, they will eventually leak, even from a high pressure, metal cylinder.

[@deelkar]

Thats also the reason why Ar still escaped, despite being a heavier gas

[@ZomB1986]

2:10 I think the rubber matrix is damaged by the constant bombardment of heavy molecules and the ftalates are leaking out just like old rubber bands 'melt' before they dry out

[@name_here___4070]

Prank idea: fill a baloon with enough SF₆ so it will pop in a few days, and leave it at a “friend's” house in a rarely-used closet or hidden somewhere.

[@somedude7633]

Calculate so it goes off when they’re awake, but not doing anything

[@caodesignworks2407]

That's how you get idiots running around saying their house is haunted.

[@asdfxcy]

That was a superb experiment and explanation! I think I finally grasped the concept of partial pressure! Thank you :) I was always confused about how different gases could "keep to themselves" when they are all basically just balls bouncing around. Your comment about gases essentially being a vacuum in the eyes of a single molecule finally made it clear. It's not that different gases "ignore each other and only interact/bounce with their own kind" but that they don't really exert pressure on each other and thus all that matters is what happens at the borders (the balloon wall here).

[@AtomicShrimp]

Is this a property of fluids, or all matter? Looking forward to your video on osmosis in solids...

[@mykeprior3436]

Yes? Most crystal lattices have space for impurities to get through. Molecular air is simply too large at standard temperature. Ironically cooling it down to decrease any bond lengths would allow more permeation (as the solid lattice doesn't change as greatly as the repulsion of gases would)

[@fluffycritter]

Applied Science did an interesting video on supercritical CO2 in which he found that the pressurized CO2 would in fact diffuse into acrylic, which was really mindblowing.

[@bjarnivalur6330]

Fascinating, my first guess would have been that the SF_6 had decayed and never would have thought of this sort of experiment.

[@tomh2628]

Once I was doing some stuff with hydrogen balloons and I left one out for a long time and when I tried to burn it nothing happened. I guess it was just a air balloon by then. Cool

[@tinionn]

Dude i just now noticed we have the same clock. After all this time enjoyin your videos. Finally figured out why that clock was familiar. Have had one in my camper/home for 3 years now. Cheers bud. Always good content from you. I appreciate it!

[@lawlawlo]

I like the KZbin algo comment bait in the background so much that I decided to comment.

[@ffnovice7]

Explain?

[@SpoilerAlert__]

@@ffnovice7 maybe referring to the tilted *1mil subscriber* plaque

[@washyourhands]

@@ffnovice7 I think he's referring to the thumbnail. KZbin priorotizes thumbnails with faces, text, the youtube logo, and probably a few more things. Cody just said "eh what the hell" at some point and started making these beauties to try and get shown to a few more people. And I agree, great work.

[@rafiqkatana]

I used to skip science at school and go put bets on the horse racing at one of the pubs. But I've just sat through what has to be possibly 60+ videos of yours. And I have to say I really enjoyed them. I even subscribed after a video you did 3 years ago I think. Anyhow thanks mate and stay safe. ..I want to see many more.

[@w0ttheh3ll]

this is so nice. when you said sulfur hexaflouride, I immediately thought that air must have diffused in, but yeah, one doesn't really think about osmosis in terms of gas to gas. I certainly never heard about it before.

[@buckstarchaser2376]

I've heard that "party store grade helium" is mixed with a little oxygen so that it's less likely to asphyxiate people accidentally... But it seems much more likely that they're just cheating you out of some valuable helium by padding it out with cheap oxygen, which also requires you to use more of the helium mix to lift the balloon. I think this may have been part of why your helium balloon had some gas remaining after a long time to diffuse out.

[@chucktaylorii]

Excellent discovery! I would have guessed that the SF6 was actually increasing in pressure due to breaking down while interacting with the latex in the balloon. Would it be possible to attempt a SF6 in something like a mylar balloon to see if the same results appear? It isn't that I disagree with you, I just think it would be a good proof of concept. If there were a way to see the gas interaction inside the balloon I would have suggested that too, but without some type of spectrometer, I had to think of a different possibility. Thanks for the content and excellent experiments! Keep up the great work!

[@markp8295]

Mylar has a different structure, so we wouldn't know what was causing it. You could possibly put some SF6 in a sealed box with a lot of balloons, and then see if it is still SF6 at the end.

[@AlexBesogonov]

SF6 is pretty much the model of an inert compound. It takes really extreme conditions for it to break down.

[@jaspagate299]

I almost never go on KZbin anymore but I love to go through your videos every time I do. The content is great and much appreciated! Thank you!

[@mozkitolife5437]

I'm always perplexed by his opening statement "Welcome back..." We never left planet CodysLab.

[@MisterTalkingMachine]

This is like water moving due to a differential in osmotic pressure through a membrane, it never crossed my mind gasses would do something similar.

[@foogoid8682]

Hey Cody! I was always hoping you'd make a video on this topic. I mentioned a pure-nitrogen balloon in a comment to another video, to which you correctly replied that it would pop! I work with gases, and had some opportunity to try this phenomenon before. My method was a little simpler, and did not require a vacuum pump: I simply inserted one balloon into another, then filled and closed the inner one with one gas, then the outer with another (or the same gas, for control). So there's a couple different things going on here: Molecule size vs. weight: With these balloons, it's mostly molecule size that makes a difference. All the noble gases have very small molecules (being monatomic) leak very quickly and I see no difference between helium and xenon, even though the xenon is heavier than SF6. Chemical effects: For these latex balloons, chemical reactions make a difference. This is a common science fair project, just try some propane/butane in a balloon. It can dissolve through the membrane faster. I suspect this is the main difference between oxygen and nitrogen diffusion (oxygen leaks faster in my experience). Partial pressures: The partial pressures of each gas species want to equalize across the membrane. If you have SF6 in a balloon, then the oxygen and nitrogen from the atmosphere essentially "see" empty space inside it (zero partial pressure of oxygen and nitrogen). So they will leak in relatively quickly. This even works when the balloon is filled with pure nitrogen, because oxygen will leak in faster than the nitrogen can leak out. The difference in partial pressures is also higher (the balloon starts with about 1.05bar of N2 inside. Outside is 0.2bar O2 and 0.8bar N2. The balloon probably pops at about 1.1bar). Before I knew this, I tried storing some leftover xenon in zip-lock bags, thinking that these would not have overpressure and therefore not leak. I then put it in the freezer to slow the gas down. When I took the bag out some time later, it was still inflated. However, inhaling it did not have any effect on my voice... Air had filled the entire volume of the bag and the xenon had left it, without deflating the bag. Lastly: I mentioned my own experiments above. What really convinced me of the fact that gas can leak into a balloon across a total pressure differential, was having a small nitrogen-filled balloon inside a larger helium-filled balloon. Of course the outer balloon leaked a lot to the outside, but also into the inner balloon. Not only did that balloon get bigger, inhaling it affected my voice.

[@foogoid8682]

Oh, and let's not forget that one gas is often left out when discussing atmospheric composition: Water vapor! If you have 100% humidity in standard conditions, about 3% of the air is water! Would be interesting to see what a balloon filled with dry air does in a humid atmosphere! 3% increase could be enough to pop an already full balloon.

[@AngDavies]

@@foogoid8682 going by that paper, water seems to diffuse quite strongly/quickly through rubber, so maybe harder to tell

[@BloodBoss94]

sometimes cody makes videos that go over my head completely but i still love them. best channel on youtube. you cant change my mind.

[@grandmasterpanda8006]

what a great scientific surprise! I love those type.

[@theCodyReeder]

Too bad the idea was already patented.

[@hakumaou5929]

lol

[@techgamer1597]

@@theCodyReeder shame as you're the one doing the hard work most of the time and not being paid much for it.

[@TheWhiteDragon3]

@@theCodyReeder Why would someone patent this idea? I'm not seeing any marketable or industrial uses for a non rigid container that very slowly expands.

[@unknownmenace1957]

@@TheWhiteDragon3 It looks good on a resume.

[@taylanbbb]

Your videos get even better and better every time. I always like these styles of videos. Keep up the great work and I'm looking forward to your next video.

[@johnladuke6475]

"...so I got me a jar here..." Whoa whoa whoa, slow down with the fancy science talk. I calls that a clear roundbox and I can't keep up with all the jargon.

[@markchinguz4401]

Jar gon

[@TurinTuramber]

Cody doing what Cody does best - backyard science, all explained for everyone to understand.

[@robson6285]

Heey, finally a great new thing that indeed is a great new "thing"! Thís is a video that has the great&new&interresthing high level that we loved from cody's lab, that many decades ago when we subscribeded to this channel!! Great and interresting and even some thing that is indeed só totally new that it is only since now a thing!!

[@davecommander3958]

I remember doing an experiment like this way back in middle school but it was using water and salt water, It was a way to understand how our cells in our body absorb water using osmosis. I always thought it would work with gasses but I never knew what gas’s would work.

[@TacticalKiwi4862]

I was gonna say this Thumbnail was a bit click baity........ Turns out that was Cody being genuinely confused!

[@davidbergmann8948]

Using your face in thumbnails? CLICKBAIT! 🍄

[@BillPickle]

"I didn't know that, now I do, and so do you" This is the essence of why youtube should exist, in my mind. Thanks for the vid.

[@bergonius]

Accusing of "stealing ideas" of science videos is very stupid by itself. The whole point of scientific approach is to replicate results over and over to confirm facts and test hypotheses. Multiple science channels doing same stuff is a good thing, not a bad worth complaining or accusing of copycatting.

[@somepunkinthecomments471]

I agree with you, but copying others repeatedly would make the whole community less diverse of ideas and topics, and therefore less likely to grab the attention of new comers, which is the primary goal of most KZbin channels, as that's how you sustain a channel.

[@mykeprior3436]

When it's you're livelihood you give a shit. Applied Science actually imparts value, not highschool science fair projects.

[@fkncompton7124]

@@mykeprior3436 lmao you confirmed my suspicion that you're a hater of the channel. Why are you even watching his videos if they're so beneath you? Do something with your superior intellect other than commenting on KZbin about how stupid everyone else is

[@LC-mq8iq]

Myke Prior no, science is like 90% doing what other people have already done. No good scientist would care if someone makes a video about the same topic as someone else.

[@spencerwarren8302]

I feel like this is similar to an earlier experiment where you mentioned the problems with mixing refrigerants. The problem being that the two fluids would add their pressure together when mixed instead of the mixture being at whatever was the higher pressure of the two individual gasses. Interesting stuff!

[@shade5554]

"we need to put a heavy object to keep the jar shut when pressure is equalised" *Proceeds to shut the jar with Radioactive material*

[@cullenhutchison6528]

One time I had a balloon of a certain material (I don't know what it was, but I think it was still some sort of rubber polymer, but different than most) that was filled with a helium/air mixture, and since I like balloons I kept it around. Originally it was floating, but it started sinking after about 2 weeks. However, over a year after it was originally filled, its size had barely decreased and the balloon was not wrinkled whatsoever. This is an interesting explanation for why that would be the case--the balloon was now filled with mostly air. My hypothesis is that the particular material for the balloon allowed more gas molecules to permeate it, so diffusion happened to a greater degree in both directions without the balloon deflating.

[@tonydouglas4672]

Haven’t seen any updates for two weeks , I hope you’re doing well

[@antares6844]

Cody, i admire the way you are curious of everything, thank you for your videos.

[@davidf2281]

This feels weirdly like Maxwell's Demon was possible after all, in a way.

[@Verrisin]

not really, because it's eventually just equalizing everything... I've been wondering about it for a bit too. - it's not by any means a sustainable process, and entropy only grows ...

[@nopo_b3645]

yeah another guy in the past wondering about stuff... and Einstein was influenced by Maxwell btw. i explain this here by the increase in entropy that you get if you mix gases. Alternatively you can derive it so that it is equally likely for gas molecules to leave the SF6 balloon than to enter it. Should be the same. But yeah osmotic effects and you think ages what the hack. Its weird. Especially if you dont have any other interactions than entropy

[@subparsurfer2860]

I love how much time you give to science

[@brockashsfrund]

Ok just gloss over the fact that you let those balloons sit there for a whole year

[@Normandy-e8i]

what do you mean?

[@TheDeadMeme27]

wait he was serious? xD

[@w.o.jackson8432]

Seriously, I had to do a double take there.

[@JKTCGMV13]

Oh wow I just got to that part lol

[@AdricM]

great to see a follow up video on this. i remember when you first posted about it getting bigger. (maybe that was patrion, dunno been following for a goodly while) love when a question gets a more indepth look.

[@Thee_Sinner]

Thumbnail makes me wonder if Cody is experimenting with the algorithm again.

[@JakeHarris0]

Thank you for the side-by-side timelapse videos. That really made this video a lot more credible. This is a really cool effect.

[@drivedoguguinha8553]

0:23 when you look into your pants

[@bebeKoRider]

hahahahahahaha..I just realize this a bit slower..hahahhahaahahahaha

[@spdrfx]

Cody, you are the one of the few people who can amazes me. I really miss these types of videos.

[@electronicsNmore]

That was great experimentation! 👍

[@reliantk102]

I had no idea! Great vid! I also enjoy how your videos dont have constant background music, it's more calming and seems more personal.

[@kappakappa7761]

when youtube recommendations give a 16 second old vid

[@TheDeadMeme27]

Lmao

[@nagualdesign]

Or "notification", as they're more properly called. If that's all it takes to make you "laugh your ass off" I can't imagine how you'd react to comedy! Must be wonderful.

[@aidenmizhen9684]

Amazing video, and a great demonstration and use of the controls to solve the problem and ensure it's validity.

[@ScoopofScience]

Casually opens a balloon full of pure O2 next to a fire. Love it! 😂

[@buggsy5]

Why not? The oxygen can't catch fire. Try filling a balloon with oxygen then intentionally light the balloon on fire. Prepare to be underwhelmed by the result.

[@nickklavohn4854]

Incredible content Cody! You keep me learning new things all the time. I'm impressed with the large timescale of so many of your experiments, you are very dedicated. Keep up the great work man!

[@godfreypoon5148]

Your atmosphere is only 12 psi? I think you need a partial refund, my friend.

[@codybill24]

Nice video Cody. It reminds me how interesting it was for me to find out in one of my classes that no polymers are actually impermeable. Makes sense of course, especially how you explained it, just surprising since we tend to think of polymers (especially elastomers used for sealing gaskets and such) as being totally impermeable. Nice!

[@minnaqiu6510]

The gold in the background was really bothering me.

[@DNadler1022]

This is the kind of material that catches and glues my attention to your videos. I also can’t get enough of watching precious metal refinery. I’ve had an idea to run past you regarding Platinum and Palladium refinery. It’s something you’ve done before, but the collection method is a bit different.

[@Akkbar21]

Damn... feeling the need to defend himself against allegations of theft shows how toxic the KZbin community can be. Geez.

[@_swiggityswooty_2271]

Dude I am honestly so glad you have the subscriber count and view count that you have. Just shows people want to learn about science, even if it is some guy in his house in Utah experimenting

[@skie6282]

Soo what does this mean in my balloons tower defense playthrough?

[@obchris]

Once again, awesome video and thanks for blowing my mind as you have so many times.

[@hobbyandstuff500]

If only there was a way for a helium baloon to stay inflated saddest thing ever when it stops floating:'(

[@markp8295]

Coat the inside of your balloons with a sealant first. A thin film of an oil that doesn't damage the rubber works.

[@Larsi1997]

@Sandcastle • you are right about the shortage and the wastefullness of putting Helium in toy balloons but Fridgers and Freezers use Butan, Propan (there are more depending on application) Helium is only used in Reaching temperatures far below of what a normal freezer runs at

[@Zonkotron]

@@Larsi1997 Cryogenic freezers for medical equipment.....

[@Splarkszter]

I learnt so much, this is so cool!!! and little is talked about your dedication, one year to make the other experiment on video, wow!

[@mid7699]

Who is here from Periodic Vedios? 👍

[@bariumselenided5152]

MID 76 - Did Periodic Videos mention Cody?

[@testusersg]

@@bariumselenided5152 Nope. 1 of the commentor did.

[@neotericrecreant]

Bravo. I miss this kind of content. It gets my gears turning. Keep it up!

[@ElementalMaker]

Very cool stuff as always Cody!

[@nicoleyensen7062]

A Ruby in the rough! Hopefully the nargles don't get to him. :(

[@glenw3814]

What a great explanation of the effect, and a delightful example of how just about anybody can do a pretty sophisticated science experiment to understand their world. Your videos are helpful to curious people of any age. Thanks. I hope you have many more to come. :-)

[@ikkecool8525]

Amazing video cody!! I really like those fun projects you just stumble upon by accident. Really makes you feel like there is so much in this world left to learn!!

[@lmenascojr]

One of your most enlightening videos in a while - never thought about it till now but makes total sense after experience with helium. Well done sir!

[@catcam]

Thanks for great content ... good to see you rocking again !!!! All best from Croatia!!

[@MrBradshawbenjamin]

Beautiful work Cody, thank you.

[@adamcolbertmusic]

0:10 "So about a week ago I was playing with some sulfur hexafluoride..." I think we've all been there.

[@dethaddr]

Things like this are why I'll always keep watching your channel, Cody!

[@JoshuaMaly]

As an update to this video, it'd be interesting to see what methodologies would reduce this permeability on a common balloon. Good job, Cody.

[@alexanderreed6330]

This was one of the best Videos I've seen in a while. Great stuff. Great mind.

[@iainwalker8615]

Thanks to you I learned something new today. Love your videos Cody!

[@lizrad4207]

I like that you're nice and thouro, and great at explaining things! Keep up the good work cody!

[@iborimusic]

This is one of the very few channels that is both, entertaining and highly educational!

[@Daedrolis]

Just a note on the second test with the oxygen atmosphere, comparing the amount that the left balloon deflated with the right one once air was introduced it would still be slower because it was a closed system so would reach equilibrium faster than the right balloon.

[@ian5576]

Classic CodyDon. Figuring out this was caused by the gradient is fantastic, excellent and very simple experiment too!

[@peted7295]

Fascinating. Basic experiments like this really reveal the wonder of science to laymen like myself.

[@jgt41984]

I almost expected a " and knowing is half the battle" after you said now I know too. Made me nostalgic for early 80s g.i. joe

[@sergei_gruntovsky]

I really like the explanation at the end - very intuitive.